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i'm zinhle essamuah. >> i'm ellison barber in for kate snow. "nbc news daily" starts right now. >> today, tuesday, march 11th, 2025. breaking news. collision report. the ntsb just releasing their preliminary findings about that deadly crash over the potomac river. their urgent recommendations in the wake of that tragedy. >> also breaking. double time? president trump threatening to raise tariffs on canadian metals to 50%. why he said he's making the move and how american businesses are now reacting. >> under control. spring breakers gearing up to head to the usual hot spots. how the push to contain potentially rowdy crowds is going high-tech this season. >> and achoo, allergy season. it is now longer and a lot more intense than ever before. so what is driving the change, and the best ways to keep those sneezes and sniffles in check. we'll tell you. >> bless you, by the way.

i heard that sneeze. >> was it good? >> quality. and stay with us. we'll get to algaerjs a bit later. >> we're going to begin with breaking news out of washington, d.c. the national transportation safety board has released its preliminary report into the deadly midair collision between an american airlines passenger jet and an army black hawk helicopter. >> the ntsb is issuing urgent recommendations to make changes to the air space near one of the busiest airport runways in the country, reagan national airport. both aircrafts plunged into the potomac in january killing all 67 people on board. >> tom costello joins us now with more. tom, walk us through those changes the ntsb is now recommending. >> reporter: bottom line, this, as you know, was a midair crash between an army helicopter and a plane coming in to land, an american airlines regional plane coming in to land at reagan national airport at nit. since this midair crash, the faa has limited dramatically limited

the number of helicopters that are allowed to fly in that vicinity because of the risk of another midair crash. and now, the ntsb is calling on the faa, the d.o.t., to make that a permanent change, dramatically limiting the amount of helicopter traffic around one of the busiest airports in the country and the statistics here are startling. let me just read this to you. between october of 2021 and december of '24, 15,214 close call events, close proximity events between planes and helicopters at reagan. more than 15,000. and between 2011 and 2024, there was at least one automated cockpit warning of an imminent collision at least once a month wrer in more than half of those, the helicopter was flying too high, above the 200-foot limit. since this crash,again, the faa has at least for now put a temporary hold in place really

limiting helicopter traffic to just police, medevac, and also marine one, presidential helicopter traffic. the ntsb wants to see that as a permanent change. here's the ntsb chairwoman just a short time ago. >> urgent recommendations require immediate action to prevent similar accidents or incidents. when we issue them, we believe a critical safety issue must be addressed without delay. >> reporter: yeah, the ntsb chair there warning that there is a very real risk of another midair crash if the faa doesn't take immediate action. we're expecting a news conference from the department of transportation later today. >> what was said about the status of the investigation into the ultimate cause of that january crash? >> reporter: well, they have said all along that in fact they know that that helicopter was flying too high. the hecopter pilots may have

had bad data from one of their altimeters that didn't tell them their accurate altitude. we know when air traffic control gave them an instruction over the radio to avoid the jet, they keyed the mic at that same moment and therefore may have stepped on the traffic from air traffic control and not have heard it properly. then we know that there was at least one controller at the time doing two jobs instead of one. now, that's allowed but it's not optimal. that controller was handling both helicopter and plane traffic. you know, as in many of these cases, very often it's not just one thing that can lead to a crash. it's multiple things that go wrong. >> tom costello, thank you so much. we're also following breaking news on the economy. president trump says he plans to double tariffs on canadian steel and aluminum. >> you'll remember these tariffs were announced last month, but they're set to increase from 25 to 50% and they will go in effect tomorrow morning. the president says it is in response to ontario placing a

25% surcharge on electricity to three u.s. states, michigan, minnesota, and new york. but just a short time ago, we're talking minutes here, ontario premier doug ford announced he will temporarily suspend that surcharge on electricity. ford says he will meet with the u.s. commerce secretary in washington, d.c. on thursday. >> tracking the latest, nbc news senior white house correspondent kelly o'donnell. so kelly, what more do we know about this conversation between ontario's doug ford and the commerce secretary, and walk us through these latest developments and what we should expect later this week. >> well, you outlined the key points that we have just learned. howard lutnick, the commerce secretary, spoke with premier ford of canada. they had a conversation. they're agreeing to have a meeting here in washington. through the course of that, whether you call it a negotiation or a get to know you session or a conversation, whoever they might characterize it, the result is at least for the moment, mr. ford is pulling

back the 25% tariff on electricity to american consumers, about 1.5 million. so that is certainly another wrinkle in what has been a protracted and difficult relationship between our closest ally in terms of physical proximity and typically, the u.s. and canada have had a very friendly, collegial, and helpful relationship for many decades. and it's now in a tense place, where today, karoline leavitt, the press secretary, said it may even be a competitive relationship, which is a way rof raheting that away from friendship to talk about some of the tensions. >> i understand a source with direct knowledge of conversations has told nbc news trump has been heavily focused on canada today, with this change from ontario, do we expect that to be the case for the rest of today and have you heard anything in terms of white house reaction to what the markets are doing seemingly in response to the tariffs.

>> it's hard to know how the president spending his time going forward, but clearly, he is concerned about canada. he expressed a great interest in trying to make canada the 51st state. described as not a joke but an actual intention of president trump to try to do that. clearly, canadian officials and citizens have been very clear about their desire to not see that happen. and obviously, the markets, the fallout and all the other dimensions of a trade war, certainly are prime on president trump's agenda. >> all right, kelly o'donnell with the latest. thanks so much. let's bring in nbc news business and data correspondent brian cheung at the new york stock exchange. brian, talk to us about this latest news and what we could see impact wise on the markets. how big of an impact could the new metal tariffs have on american businesses and consumers? >> reporter: yeah, by the numbers, it's double the impact than it was original slated to have, and that's because the original game plan as scheduled for tomorrow was going to happen anyway, was a 25% tariff on

steel and aluminum imports into the united states. now, with that announcement that that's going to get ratcheted up to 50% for any sort of steel and aluminum imports from canada, that would be twice as expensive for any importer in the united states to bring in the products, which by the way, we bring in a lot. canada one of our biggest trading partners on that front. that's why this is so substantial. what is interesting is that that conversation that you were just having with kelly when it comes to the dialogue between ontario premier doug ford as well as howard lutnick, the secretary of commerce in the united states, you do wonder if maybe it is on the table somewhere down the line to take down and lower the tariffs on steel and aluminum as well as some point. we'll have to see in the days to come. >> it's been back-to-back rough days for the stock market. a lot of people would tell folks at home, okay, don't touch the 401(k), maybe don't look at the stocks, don't touch them. but that's hard for viewers. so what should folks be thinking as they're seeing all this red? >> reporter: yeah, i mean, i have been getting so many

messages. oh, my gosh, what do i do with my 401(k)? when it comes to retirement funds, the idea is you're supposed to hold on to that long term. so the idea is just to set it and go away, don't look at it, don't get tempted even though you see a lot of headlines. of course, there's a lot of concern that down the line there could be perhaps a recession. you have the likes of goldman sachs and jpmorgan chase raisin the odds of a recession later this year. for long term funds even through recessions, generally broad based index investing does tend to result in returns over the long run. don't freak out, the stock market has its ups and downs and there are more downs lately than ups. >> the long game. >> brian cheung, thank you so much. authorities are continuing their search in the dominican republic for a missing u.s. college student who was there on a spring break trip. >> 20-year-old sudiksha konanki was last seen on the beach this past thursday, according to dominican republican's national

police. she's a junior at the university of pittsburgh and is from virginia. konanki's family is now in punta cana and they spoke with local media, thanking those assisting the ongoing search efforts. joining us now is nbc news correspondent priya schriever. priya, investigators say they have interviewed a young man who was allegedly at that beach around the same time konanki was last seen. what are we hearing from authorities as they continue their search for her? >> reporter: yeah, that's right. authorities want to make it clear that they don't know at this point whether foul play was involved or perhaps this was a tragic accident. they don't know whether she is alive or if she could have tragically pin killed. but what they are doing at this point is a very comprehensive and thorough search of the ocean because there had been reports there were very intense waves at the time. they're using scuba divers, drones. helicopters, k-9s, you name it to look through the ocean. in addition to that, they're

also combing through surveillance of the riu resort which is where konanki had been staying with five friends. it was the last time she was detected on that surveillance video going from the resort onto the beach at around 4:15 in the morning on thursday. so now authorities are going backwards in time, all the way to monday, which is when she arrived on the island. in addition to that, authorities here in the united states, including the loudoun county sheriff's department, which is where konanki is originally from, she's a virginia native, are looking through the girls' cell phones to see if there's anything they can get there, and authorities in the dominican republic are also interviewing members of the hotel staff and any witnesses including that young man who you mentioned who may have been on the beach at that time. and soher family is down there trying to assist with the search right now, and of course, they're desperate for answers about their loved one, guys. >> hopefully those answers come soon. priya, thanks so much. coming up, new data shows

e-cigarette use rising among young adults. why? and the damage it could be doing to those users' health. >> first, high-stakes negotiations, details on the just agreed upon deal as the just agreed upon deal as the u.s. and ukraine try my moderate to severe crohn's symptoms kept me out of the picture. now i have skyrizi. ♪ i've got places to go and i'm feeling free. ♪ ♪ control of my crohn's means everything to me. ♪ ♪ control is everything to me.♪ and now i'm back in the picture. feel significant symptom relief at 4 weeks with skyrizi, including less abdominal pain and fewer bowel movements. skyrizi helped visibly improve damage of the intestinal lining. and with skyrizi, many were in remission at 12 weeks, at 1 year, and even at 3 years. don't use if allergic. serious allergic reactions, increased infections, or lower ability to fight them may occur. before treatment, get checked for infections and tb. tell your doctor about any flu-like symptoms or vaccines.

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palestinian activist who organized protests on campus and was arrested this weekend by immigration agents. late yesterday, a federal judge paused his deportation, pending a court hearing tomorrow in new york city. ie ikeda joins us from washington square park where protests in support of khalil just wrapped up. what should we expect from tomorrow's hearing? >> reporter: yeah, those dozens of protesters, both students and faculty from a number of universities in the area dispersing from this area here in washington square park. a lot of them holding signs, chanting, calling for his release and hoping for change at tomorrow's detention hearing that you have brought up. we learned he will not be present for that, but his attorneys now an expanding group involving the aclu among others, calling for his release and also that he be brought back here to new york to be with his wife, who is eight months pregnant. he was arrested on saturday, remember remember, in front of her from his university housing.

we learned in the days prior to his arrest, he actually reached out to the columbia university interim president asking for help, urging legal l protecti because he had expressed concerns and fears over recent threats, being doxed online, and also fears over the potential for him to be arrested, as was the case by i.c.e. and then he since has been transported to a louisiana prison. his wife speaking out in a statement urging people to express understanding, saying she just wants him back here so she can give birth with him by her side. a number of people out here today saying this is an infringement on the freedom of speech and saying it's a slippery slope with president trump saying this is the first of many arrests to come, zinhle. >> to that end, briefly, what are you hearing both from supporters of khalil today, but those who have also spoken out in favor of his detention? >> reporter: well, the white house press secretary just a short time ago saying he was arrested under the immigration and nationality act, saying he harassed jewish american students at columbia's campus

and handed out pro-hamas propaganda. she also said dhs has been trying to lean on columbia and their help to identify other students who may have been involved but she said columbia has not been helping. columbia university saying that they're deeply committed to the freedom of speech, zinhle. >> thanks so much. a marathon meeting between the u.s. and ukraine wrapped up just a short time ago in saudi arabia. u.s. secretary of state marco rubio says ukraine will support a plan for a 30-day cease-fire in its war with russia, in exchange, the united states will immediately lift its pause on intelligence sharing with ukraine and also resume security assistance. nbc news chief international correspondent keir simmons joins us now from saudi arabia. keir, news of this deal is big and surprising. this is potentially the first sort of temporary cease-fire we have seen since this war began. i know in the past, russia had expressed skepticism about a temporary cease-re saying it

would only give ukraine time to sort of rebuild and recharge their military. what has happened thus far, and what are your sources saying about this supposed deal between the u.s. and ukraine? >> reporter: yeah, we don't have a cease-fire yet, a temporary cease-fire. it comes down to the russians. the ball is in russia's court. secretary rubio said at a briefing just a little while ago after this statement was announced. there are huge caveats in the statement. it does not include, for example, security guarantees for ukraine, which kyiv had insisted on of course until the disastrous meeting in the oval office. clearly, they have conceded not asking for that or not having it in a statement like this, at least for now, really because of what happened with president trump and president zelenskyy. there's also the question of whether the russians will sign up to this themselves. they are making progress on the battlefield to stop now, you mentioned why a cease-fire for

the ukrainians may be tricky. for the russians too, to stop now, they may think they may gain more by fighting than they do by talking. now, the two sides, the ukrainians and americans, saying they're going to appoint delegations for negotiations. >> keir simmons, thank you so much. we appreciate it. coming up, reaching new heights. the dream that is taking off for one of the youngest pilots in the country. you're watching "nbc news daily." >> we are always streaming free 24/7 on nbc news now. watch us wherever you stream live, that includes youtube, hulu, and roku. of course, you can watch us anywhere, anytime on the nbc news app. stay right there. the news continues right after this. (♪♪) ♪ (slow down) ♪ (♪♪) cut!!!! i get it! slow motion. slow down geographic atrophy.

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the union wants 18% over three years. the president of the union told our kris sanchez that since a weekend meeting that lasted about ten minutes, they've exchanged just a few emails from with vta saying they want to meet, but also that the agency may be trying to get a judge to end the strike. getting mixed messages at this point. you know, and the message definitely is, is that they are not ready to reach any sort of a deal. the vta has not commented on the union's claim that the agency is trying to end the strike through a legal injunction, but the impact is spreading to other transit agencies. we reached out to bart, which saw about 500 fewer riders at the berryessa and milpitas stations, where bart connects with vta. let's talk about our weaeather. th rain is getting closer and closer. let's check in with our meteorologist, vianey arana, for the forecast. we're staying dry for our tuesday with a mix of sun and clouds. we started out with 40s and 30s. at one and 2:00, we'll start to climb up into the 60s,

and that's where we're going to max out for this afternoon. you'll still feel the warmth, and then we'll get the increase in cloud cover. and starting tomorrow, we're going to see drastic changes with the return of rain. heavy rain at times for your wednesday. also monitoring those gusty winds 45 plus miles per hour with a chance for some thunderstorm activity which could even bring some hail and also local mountain snow. travel conditions for the sierra are also expected to get tricky as we inch into that wednesday early thursday forecast, so please be careful. we'll be back with your 7-day forecast in 30 minutes. thanks, vianey and here are some other stories you need to know about a listening session tonight for north bay high school, marked by recent violence. the south bay's top doctor is retiring, and the south bay needs a new one. and another meeting over the future of the oakland coliseum, where the urgency is so severe with respect to the community and getting this completed that i really want to just impress upon everybody at the board that this is something that will not go

away. that is ray bobbitt speaking to the alameda county board of supervisors this morning. we're watching to see if it will finally clear the sale of the coliseum to bobbitt's group of investors. the african american sports and entertainment group. there are fears from oakland leaders the deal is at risk of falling through. that was last week, but they are back at the table. as you can see, both the city and the a's sold their shares of the coliseum to that group. but the a's half of the deal is still needing approval from supervisors. investors he stalled payments, meantime, to the city of oakland until the sale is finalized. the meeting is now in closed session, so we will have to wait for an update from santa clara county health officer doctor sara cody is announcing her retirement. doctor cody became particularly well known during the pandemic. she often led the news conferences and updates aimed at informing the public about the rise of covid 19, which triggered restrictions and lockdowns, in fact. today marks five years since the world health organization declared

covid. a public health emergency. doctor cody has been the county's health officer since 2013, and has served as its public health department director since 2015. she departs both positions when she retires in april. parents and students tonight will haveve the chance o sound off following recent violence at one north bay high school last month. one student was stabbed in class at elsie allen high in santa rosa. last week, police arrested another student, allegedly for carrying a loaded gun. we also know some parents are upset that the principal of the school has been on leave since the stabbing, but the district says he was placed on leave for other issues it had with him. a listening session will be at the elsie allen high school library starting at 5:00 toninight. waymo robotaxis could be heading your way soon. waymo announced this morning that its driverless car service is coming to mountain view, los altos, palo alto and parts of

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here's some of the stories making headlines on "nbc news daily." >> king charles is revealing what he's crowned his favorite songs to listen to. the king hosted an apple music broadcast on monday called the king's music room. he played a few of his favorite songs as a way to celebrate commonwealth day. what were some of his top tracks. could you be loved by bob marley was his number one pick. others holding court were songs by diana ross, and love this one, beyonce. >> had king listens to the queen. it makes sense. >> utah is set to become the first state to ban florroid in public drinking water. it comes despite opposition from dentists and public health agencies. the mineral has come under some scrutiny in the last few months. >> the former president of the philippines rodrigo duterte has been arrested by the international criminal court. they accuse the 79-year-old of crimes against humanity during his war on drugs. he served in office from 2016 to

2022. according to human rights groups, tens of thousands of unarmed suspects were murdered during tat time. duterte has denied those allegations. his daughter confirmed he was plplaced on flight to the hagu earlier today. >> voters in greenland are heading to the polls today for their parliamentary elections. >> their autonomy has been thrust into the global spotlight as president trump expressed his interest in acquiring that territory. greenland has been part of denmark for 300 years. it gained home rule in 1979, though the danish government still controls its foreign and defense policy. sky news has more from greenland. >> reporter: greenland is a place that is full of surprises, not least because the world really hasn't paid it much attention until now. it is the world's largest island. australia is regarded as a continent. it has a tiny population, less than 60,000 people. a place of almost potential and

natural beauty and it has this mineral wealth that's largely untapped not least because it's covered in snow and ice for most of the year, it also doesn't have roads between its towns and cities. all of that is making it attractive to donald trump, but his advances on the eve of this crucial election here are not welcomed by greenlanders. they make them angry and upset. and what they're saying is a kind of gangsterish president saying to greenland if you know what's good for you, you'll come with me. they're rejecting it. it's good in a sense greenland has been put on the map, but the fact he's interfering in their politics is not welcomed. just ahead of this vote, donald trump put on truth social an appeal, an attempt to seduce them further, saying he could give them billions in deals that would make them rich. those who want to see independence are seeing an opportunity. they say donald trump is saying to greenlanders, you're worth

more than you thought you were, and it's encouraging them to go for independence and stand on their own two feet. their opponents say there's real danger if greenland becomes independent too quickly, it could be exposed and vulnerable and prey to the predatory approaches of donald trump. i think it's fair to say that greenland is not about to become an american state anytime soon. unless it's invaded by donald trump. they simply don't want that here. they like some of what donald trump is bringing, but they dont want to become american. they regard themselves as very different to america. certainly, his intervention is galvizing politics and we'll have to see what impact that's having when the vote is counted this evening. >> thank you. a recent report shows an increase in young adults using electronic cigarettes. >> scientists track data from 2019 to 2023, and it found the percentage of adults over the age of 18 who used e-cigerates or vapes increased from 4.5% in

2019 to 6.5% in 2023. it also found people between the ages of 21 and 24 were most likely to use those products. nbc news medical contributor dr. vengupta joins us now. what are some of the trends this report found as it relates to vaping and the seeming increase in usage? >> reporter: yeah, you know, this is sobering news because we thought earlier in the pandemic that things were on the decline, as you pointed out. now they're on the upswing in a really critical demographic, that adolescent into early adulthood demographic, whose behaviors are changing. especially since we're seeing that spike in 21 to 24-year-olds, that eralds bad news. we're also seeing men using cigarettes, e-cigarettes more than women which is frankly sink

roinous and symmetric to historical data. >> these young adults are using the products at the same time their brains are developing. i have even noticed more and more young people around me pulling these out. how does vaping impact development and growth? >> zinhle, this is an area of evolving research. i'm a pulmonologist, we have been focusing on this for a while now. what we now know is any nicotine exposure, either through an e-cigarette or traditional cigarette, impacts adolescent brain development, our memory centers, how we process information, big deal for this young group, it can impact mood swings and how we process information. risk of potential future risk of major depression, that type of spectrum of illness. this is very worrisome especially at a time when there's many factors at play impacting adolescent brain development. this is a big worry.

>> dr. gupta, can using e-cigarettes and other products, say like nicotine pouches, could those have different impacts on people than a traditional cigarette? is it better? >> you know, i think this is where there's the nuance here is in the details. traditional cigarettes have tobacco. tobacco has over 70 chemicals in it. when you combust it with a flame, deadly. it's one of the leading factors for cancer. e-cigarettes have nicotine, they don't have tobacco, so it's a balance here. nicotine itself is harmful. we know, we talked about brain development issues, number one. number two, we think second hand smoke exposure is not good for your heart or lungs. but the difference here is traditional cigarettes have tobacco. e-cigarettes do not. there's a difference in terms of risk profile, but both are risky. >> really important information. thank you. as the spring break season

heats up, police in popular destinations across the country are stepping up patrols. in miami beach, police there are rolling out new technology to keep a closer eye on the public. marissa parra got a behind the scenes look. >> reporter: the spring break travel blitz is in full swing. tsa says expect high passenger volumes over the next few weeks. airlines get ready to fly 173 million passengers between march and april alone. >> spring break. >> reporter: popular spots nationwide like south padre island, ft. lauderdale, and new orleans bracing for crowds. with many cities trying to manage the spring break mayhem of the past. >> nobody wants you here. >> reporter: miami beach releasing this viral reality check spoof for partygoers. >> dui check points. police. $100 parking. >> worst. >> spring break. >> ever. >> their second year of strict measures in a row which the

police chief said worked. >> between 2023 and 2024, did you see a major difference in even arrests? >> significant difference. 24% decrease in felony arrests which is huge. >> now, they're going high-tech. >> this is the realtime intelligence center. >> over 900 cameras complete with license plate readers and artificial intelligence. >> this isn't facial recognition. it's object recognition? >> it's object recognition. that includes vehicles, if need to be identified. >> reporter: for extra eyes in the skies, they're debuting drones as a first responder. >> opening. opening. >> reporter: i feel like i'm in a sci-fi movie. launching from the roof of police headquarters, the drone can arrive on the scene in minutes and even shout commands. >> attention, please exit the area immediately. >> reporter: bypassing crowds and busy miami traffic. >> that drone gets to the scene much faster in many cases than the police officers. >> reporter: this is being

debuted for spring break. does it have purposes that can be used well after spring break? >> absolutely. and for years to come, in my opinion. >> reporter: marissa parra, nbc news. in today's good news, we introduce you to a 17-year-old student who is soaring to new heights. she landed her pilot's license before most teenagers get their driver's licenses. nbc's antonia hylton shows us how her passion is just taking off. >> reporter: it's not every day you see a 17-year-old juggle classes at spelman college, then go soaring through the clouds. kimora freeland hadn't imagined this life either. >> i wanted to be a marine biologist. >> reporter: at 12, her mom had the idea to put her on a wait list for scholarship private pilot program. at 15, she got in. trading her love of sea animals for the sky. at 17, after two years of flights and intense studies, she made history as the youngest licensed pilot in new york state and one of the youngest black

female pilots in the country. >> what do people say when they find out that you fly? >> they're always so amazed. wow, you're so small, you fly. >> reporter: the training program united youth aviators introduced her to other black kids eager to take flight. she found community. in an industry where less than of pilots are black. >> did you worry whether or not you would fit in? >> no, i knew i wanted to create change and i knew i could show other people you can do this. >> reporter: so she showed me a bit of what she's learned. demonstrating more mastery of this plane than i had over a car at her age. >> got my driver's license four days after my pilot license. >> are you serious? yes. >> she set her sights even higher. planning to finish college in just three years and become a commercial pilot. do you feel like you're making history in that moment? >> i don't think of myself as someone who made history. what i did, anyone can do it. i'm so grateful for it, so amazed every time i fly. >> reporter: she might even open

her own aviation school one day, but for now, she's going to enjoy the view. antonia hylton, nbc news, atlanta. >> our thanks to antonia for that. coming up next, it is almost sneezing season. why allergies might be making you suffer now more than ever, and how you can find some relief. you're watching "nbc news daily." >> first, time for today's daily snapshot. dozens of people in japan gathered today to release dove shaped balloons into the sky, a symbol of remembrance on the 14th anniversary of the 2011 earthquake. the 9.0 magnitude quake triggered a tsunami killing nearly 20,000 people. it also caused a nuclear disaster at the fukushima nuclear plant, forcing thousands to flee their homes, homethey won't be able to return to for at least another 25 years. ceremonies were held across the country to reflect on the perseverance of the people there, insuring that the memories of those lost live on. more "nbc

in today's daily health, we're digging into something you might be feeling right now. >> the air is getting warmer, spring right around the corner. and that means the peak of allergy season. it's basically here. >> according to the cdc, nearly 81 million pele in the united states alone have seasonal allergies. that is more than one-fourth of the entire adult population. if you have been feeling like your allergies are getting worse or starting earlier than ever, you're not alone. here with more on set is allergist dr. purvi parikh. we're so excited to have you here because it's a whole lot of thoughts and assumptions about allergies. you can help us debunk and know where everything is. let's talk about what's happening now. how are allergies and the seasons changing and why do we think or are we feeling it more than we have in the past? >> it's not in your head. allergies have been getting worse, primarily due to climate change and global warming.

with rising co2 levels, plants feed off that and produce more pollen. and because it's warmer, they start producing pollen earlier. alaerm season has grown by almost two weeks in recent years. it's longer and stronger because of all the pollen in the air. >> i didn't get allergies until i was older. i didn't know what was going on. how do people differentiate whether or not they're experiencing seasonal allergies. >> the symptoms can be identical, but generally colds last 7 to 10 days and then they're gone in a week or more. allergies can last weeks and they're seasonal. if you notice every spring and fall you have colds for weeks and weeks, it's probably allergies. then allergies tend to have more itchy symptoms and you don't get a temperature with allergies. a cold, you might get a temperature. >> can you develop allergies later in life? and when we're talking about allergies, is there any one

state where it's like, no, it doesn't happen here? >> absolutely, you can develop allergies at any time, especially environmental ones. especially if you move to a city, after you live there a few years, you can develop it. there used to be thought certain areas of the country might be space, now, because of global warming and climate change, there is no safe place. cities that used to have milder allergies now have severe allergies. it's becoming a problem across all 50 states. generally warmer places like in the south, texas, they have much longer allergy seasons because of the climate. >> to that end, you're an allergist, giving the allergies are more intense, are medications still effective and what about the old wive's tale tips like getting the local honey? >> unfortunately, the local honey doesn't work because what's in the local honey is different than the pollens you're actually allergic to in the air. honey might be soothing, but

you're not actually desensitizing yourself. yes, we have found that sometimes medicines aren't working as well as they used to as allergies are getting more severe. people are developing asthma for the first time, for those reasons, one, you should see an allergist, and there are other desensitization things, allergy shots, the drops that make you less allergic over time. >> explain those to us. how do allergy shot work and how do you know if it's right for you? >> we give dilute doses of the allergen, and each week, we give more and more. it's building up your immune system's tolerance to that allergy. over time, you stop reacting and a lot of my patients don't feel anything from the allergy standpoint. they don't need medications anymore, their asthma is better controls, so it real a does work. >> any tips for recognizing symptoms in ourselves or our dependents like our kids or pets? >> it can be head to toe. you know, the itchy eyes, stuffy

nose, coughing, sore throat. and pets can get allergies too. i'm not a vet, but i know they have similar treatments in terms of allergy shots and other medications too. >> interesting helpful information. i was a kid with bad allergies, had asthma because of it. outgrew it, now it feels like it's coming back. but i also, i grew up in georgia. i thought up here would be okay but it's not. start with over-the-counter medicines if we feel sick. >> start with over -the-counter medicines unless you have breathing symptoms because that could be a sign of asthma. those go straight to the doctor, don't take that lightly. >> love that. >> dr. parikh, thank you. >> we have a lot more news ahead. >> you're wa >> you're wa tc here i am—field trip chaperone! before preventing migraine with qulipta, it was hard keeping plans. and look at me now! you'll never truly, forget migraine,

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not going to have our pathways. everything, especially to ap classrooms to pathways like construction and our i.t. program. things that make us different and make us unique. they're not going to exist anymore because of them. without cuts, the district says it risks burning through its reserves and falling under the state's control. students plan to walk out again tomorrow. we're still waiting to hear back from the school district. let's switch gears and talk about our weather. we've got rain coming this week. for more on the timeline, here's meteorologist vianey arana. this will definitely be an important seven-day forecast to look ahead to, because of all of the active changes we've got coming up. we've got clouds and sunshine today. prep your backyard prep for those gusty winds, because by wednesday we'll see the return of the rain heavy at times. chance for isolated thunderstorms that will carry over into thursday's forecast and the weather pattern will remain active into friday, saturday and sunday. we're still

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solution on how to clear homeless encampments in fremont. meantime continues its push to clear homeless camps from public spaces. nbc bay area's ginger conejero saab tells us how a specific notice is fueling discord. fremont is cracking down on camping in public spaces through an ordinance that does two things one, it makes it illegal to camp on public property, and two, it also makes it a misdemeanor to aid and abet an illegal encampment. several groups, however, are pushing back. advocates for the unhoused say the ordinance criminalizes

those who are homeless, and they're now filing a federal civil lawsuit to try to prevent the ordinance from starting. we think that this is a moment that people all over the country need to pay attention to, because it is signaling the direction that we're going with respect to taking care of the people who need care the most. this recent image of a bright green, vacant notice attached to a wheelchair at a homeless encampment is fueling anger. the city says this doesn't have anything to do with the recent ordinance. the property was tagged as abandoned, and if it's not claimed by a given date, it can be removed from public property. they say the area was already on the city's encampment cleanup schedule, and the residents were given notice that the cleanup would be taking place. now, fremont city council previously said that they would reconsider or consider amending the misdemeanor clause in that

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i'm craig melvin. and this is dateline daytime on nbc. katherine walton: it was just chaos.