the best duke university researchers have an answer and after the break what amazon may >>and was on could be moving into your local mall. the e-commerce giant is in talks with the simon property group in order to replace close to department stores. simon is the largest mall owner in the u.s., the wall street journal reported yesterday amazon would convert former or current jc penney and sears stores and 2 distribution hubs and it could be a win-win situation amazon would get more space closer to where customers live which would speed up shipping times and mall owners would get a cash wish rich tenant in order replace their bankrupt anchor stores. even though the number of people flying has plummeted 75% because of covid-19 the tsa says it is finding more guns. july 2019 the agency was looking at about 5.1 guns per million people going through security but this year. it jumped to 15.3 guns per million people. these statistics are for guns in carry on luggage and the tsa ads most of them were loaded. this jump in passengers carrying guns his security is actually not all that new. ther

a new study from researchers at duke university has advice on which masks work and which don't gators or fleece masks they say you should stay away from. >>it's a combination certainly off. stretching is something material and immaterial potentially being very thin. >>the bandanna according to the researchers may look cool but doesn't work well. >>the matthew itself. that is just me a little bit more transparent a little bit more transmits it to these droplets in addition, there's of course lots of gaps, the duke researchers tested 14 different kinds of masks, they shine here, it doesp't light from a laser through slits in a dark box, a person spoke one phrase repeatedly into the box to create problems. >>the healthy people. the healthy people. >>they used a cell phone camera to record the droplets then counted the droplets that were let through by the different masks the ones that work well they say and 95 surgical masks for the best letting up very few if any droplets but those should be reserved for frontline healthcare workers, those standard surgical masks the light blue ones tha

that's not really a good idea. >> reporter: duke university researchers say they conducted this study to help people better understand the options they have to protect themselves during this pandemic. >> we want to bind together as a society to rid ourselves of this monster. >> reporter: cheryl hurd, nbc bay area news. >>> not what we want to hear. as school is starting back up, more children are getting infected with covid-19. that's according to the american academy of pediatrics. siept scientists say there's been a 40% increase in pediatric cases. children now make up nearly 9% of all covid cases. >>> san francisco streets got a new mural today. volunteers of all ages and races were in the tenderloin to help paint the words "housing black" on golden gate avenue. it was painted on the concrete with the hopes that it would spur some concrete solutions in a city that has long been accused of pushing out its black residents. it's estimated blacks make up only about 5% of the population in the city and yet 40% of its homeless population. >> it's a very severe circumstance that we're dea

certainly one of those pieces that people come in, they look, and they go, why is there a letter from duke universitythe north carolina basketball museum? they see it is a letter about his recruitment. we are very fortunate. michael is a great ambassador of the university of north carolina and one of the greatest players of all time, not just as a tar tar heel hill, but in all of basketball and in all of nba history. basketball is important not just at unc, but in this state, this region, certainly in our community, and definitely here on campus at unc. the acc has grown. it was called tobacco road because so many of the programs were based in north carolina. basketball is part of the culture. part of when you come to school at north carolina. a lot of people that come here want to be part of carolina basketball, men's and women's basketball. athletics is important. it is not the primary reason people come to the school. getting a great education will always be the primary mission at unc, but basketball is part of that. it is part of the fabric in this community and the acc, and people take it seriou

duke. university thank you for your time. now to it'lll where it's been almost exactly two years since the bridge collapsed in the city of genoa and left forty three people that it was one of the country's worst disasters in decades. but earlier this monday prime minister joseph because he was able to inaugurate the new rules one kilometer long viaduct a key arteryor the porort city.y. located in the northwest of italy but monday's inauguratatin was ovevershadowed when severarl of the victims family memembers. decided to boboycott the eventnt they say they hopee attttention will stay focused on the criminal investigation. into the collapse but it's still under way france twenty four josephine mckenna is in general. she sent us this updatete. itit was ann emotionay for the people of genoa. marking the opening of this new bridge just two years since the collapse of the mararandi bridge killed forty three people. now ththe families of those victims were adamant they did not want to take part i in the ceremony. so the italian p p

. >> reporter: while many there shunned masks, new studies like this one from duke university testedhe efficiency of 14 different types of face coverings, finding the n95 use by medical staff is the most effective. and fleece masks were worse than wearing no masks at alall. rema recy, ia hospital since april, on a ventilator, in a medically induced coma. 31 year old francisco garcia walked out of a southern california hospital on sunday, seeing and hugging his family for the first time in nearly four months. and tonight we are learning the number of coronavirus cases in children nearly doubled in the last month. new data from the american academy of pediatrics shows that overall in the united states more than 380,000 children have tested positive since the pandemic began. margaret? >> brennan: manny bojorquez in miami. now to breaking news and that rare security breach at the white house. moments after beginning his daily coronavirus briefing with reporters on live television, president trump was escorted out of the room by an agent who whispered in his ear. tonight the president say

so a group of duke university researchers tested 14 different types of those face coverings. the n-95 came out on top, surgical masks and cotton masks came in second. meanwhile the bandanas weren't affected at all, because if that becomes saturated with germs, they can actually be worse than wearing nothing. doctors in the bay area say they're not surprised by those results. >> so when you breathe, everything is collecting at the bottom of the bandana. it's got a little triangle and it passes onto your neck and your chest. that's not really a good idea. >> the study was conducted so people can better understand what is the best protection during the pandemic. >>> well, heading into this upcoming school year, a lot of parents have a lot of questions about their kids who have special needs and who have those ieps. today the palo alto unified school district plans to hold a meeting to address those concerns. according to palo alto online this morning, it plans to address the hope that the state will soon allow small groups of students to return to campus for in-person learning.

. >> duke university researchers wanted to test how easily germs can spread during rmal conversationox, lens and self pne camera to sualiz droplets and film people kingth >> stay healthy, people. >> it's astounding how much stuff comes out of you. you don't have to sneeze or cough, it's the speaking itself that already generates lots of droplets. >> you may not know that you're spreading the disease. you won't see it. >> dr. martin fisher and eric west man's team tested several types of face coverings, 95s without valves are the best protection, surgical maths are adequate. but coverings like bandanas and neck fleeces did not block droplets and may actually spread them more. >> everyone has been saying something is better than nothing. but your study says that is not the case. >> that is not the case. we have this mesh in front of you, these big droplets that you met actually get broken down by this type of fabric into a bunch of little droplets. >> the findings drive home how critical masks are especially since the coronavirus can spread when someone doesn't have symptoms,. >> when

in his period in tom wolfe's life a serious connection with duke university began. his sister helen is in the audience with us, graduated from the balance program some years before, 1998 tom and sheila's daughter alexandra entered the freshman class at duke university and tom wolfe participated in the very first mom and dad read program in october of 1998. it was a stunning freshman class with the daughters of robert kreis and tom wolfe. alexander introduced her father at the event and let the crowd know that tom wolfe had started a man in school when she was 7 years old and how pleased she was it was finally completed. [laughter] >> tom wolfe was a gracious dad speaking at the library dinner posing for a plastic duke reads poster and serving as commencement speaker and all the while doing research for a new book at an institution of higher education which assured me on several occasions is not duke. i took him with me to a faculty meeting, spent time learning and observing duke basketball and all the time like a train reporter observing and to throw us off guard he

the market which are the most effective for curbing the spread of the virus >> researchers at duke university wanted to know which ones actually worked to prevent the spread of covid-19 they asked people to talk into a specially designed box to test different fabrics and masks. >> we had people say stay healthy people five times and you can start seeing the particles growing and growing in the box. >> watch what happen to the droplets from a single sentence. >> stay healthy, people.e dropls clots and the gator, 0% effective. that's right zero droplets passed through the thin material of the gator and those droplets were split into many more smaller ones. >> this might bee particles car they stay in the air longer the smaller they are >> that gives them more of a chance to be inhaled by someone else. >> that's right. >> reporter: the study useda single laborat and he acknowledges not all gators are the same. >> the single layer you can see through, they're not doing much but clearly the gator and the band did not block the particles as well as the cotton, the surgical, the n-95e cdc recommea f

. >> duke university researchers wanted to test how easily germs can spread, even during normal conversations. they use a box, laser, linens, and so from camera to visualize droplets and films people speaking into the box. >> astounding how much stuff comes out of you when you just speak. you do not need to sneak or cough, it is the speaking itself that generates droplets. >> you may not know that you are spreading the disease. you won't see it. >> reporter: dr. martin fisher and eric westman's team tested several types of face coverings. n-95's without valves were the best protection and surgical masks were also -- coverings like bandannas and neck fleeces did not lock droplets much and may actually spread them more. >> you have this mission in front of you, these big droplets actually get broken down by this type of fabric into a bunch of little droplets. >> the findings -- especially since the coronavirus can spread when someone doesn't have symptoms. >> if you want to reduce your risk and other people's risk of a transmissible disease, the science is clear that you should wear a mask. wea

a new study from researchers at duke university has advice on which masks work and which don't. >>gators or fleece masks they say you should stay away from. >>it's a combination certainly off. stretching is the material and immaterial potentially being very thin. >>the bandanna according to the researchers may look cool but doesn't work well. >>the minute you itself. that is just me a little bit more transparent a little bit more transmits it to these droplets in addition, there's of course lots of gaps, the duke researchers tested 14 different kinds of masks, they shine here, it doesn't light from a laser through slits in a dark box, a person spoke one phrase repeatedly into the box to create problems. >>the healthy people. the healthy people. >>they used a cell phone camera to record the droplets then counted the droplets that were let through by the different masks the ones that work well they say and 95 surgical masks for the best letting up very few if any droplets but those should be reserved for frontline healthcare workers, those standard surgical masks the light blue on

>> i saw the study from duke university. it was very well done.hey used a laser beam to look at respiratory droplets and how they disperse from these masks. and the bottom line is the safest masks would be the n95 masks. the kinds the doctors wear in the hospital. but that's not the kind you wear every day when you're out and about, they're not very comfortable. the masks that do work are the surgical masks and the cotton masks. make sure they have three layers, three-ply. the ones in the study were three layers. the ones that did not do well were the ones that were knit, and made out of fleece. also gaiters, where people wear them around their necks, totally ineffective. surgical masks and cloth masks, make sure they're made of three layers of cotton. >> new research shows the majority of states in this country are facing a potential shortage of health care workers, and 26 states are expected to face a shortage of icu doctors. what's your take on this? >> when we think of icu beds, it's not just the bed, it's the staff that makes the icu tick. yo

a team of scientists from duke university tested 14,000 commonly available face coverings and used aaser beam to track the droplets a peperso produces when n speaking and th measurured how many papass thro the various tytypes of matateri. the study found that double layer polypropylene reduced droplet emission by 90%. the material is the most commonly used in face masks. common masks cut droplets by 70 to 9 90%. knitted masks reduced them by 65%. and double layer bandannas cut them by roughly 50%. but the study found that neck gators actually increased droplets by 10%. the team says the fleece mateterial seems t to break upue drdroplets intnto smaller r one the researchers adadd that the e of sucuch masks mimight be counterproroductive as these smaller droplets remain airborne for longer. >>> the united states is moving to restore sanctions against iran, including an arms embargo. the trump administration accuses tehran of violating the terms of 2015 nuclear deal. >> our message is very, very simple. the united states wilt never allow the largest state sponsor of terrorism to freely

i am a graduate of duke university. i got a scholarship there, but not a basketball scholarship i assure you. but i would like to own an nba team. mark cuban is someone that did that at an early age. as a young man, he bought an nba basketball team and won a national championship. i always admired his sports prowess and business acumen. my children always told me -- mark cuban is a lot better. age madeat an early some money. you made in a norma's amount of money when you sold -- an in thena's amount of money -- you bought a basketball team. then you have a shark tank series that won a any award. you are well regarded by entrepreneurs. presidents of the united states call you for advice. there is something about your life that is imperfect -- isn't perfect. mark: i have kids. parent needs to hear. stupid,and i got really lost half our brain capacity and are beholding -- beholden to our kids. being a parent is a challenge. it is very humbling. david: i have three children as well. i agree. you grew up in pittsburgh, but n

not really because i believe everything has been kind of addressed here at tech >> reporter: at duke universityudents are greeted with covid tests. this fall only freshman and sophomores will be housed on campus >> this is a difficult but necessary decision >> reporter: at notre dame the school president said all students will be tested before returning. >> we'll don't test them we monitor their health. >> reporter: even with precautions there are some issues at iowa state university 66 students tested positive for covid during move in at syracuse a grouch students placed on interim suspension for breaking the school's mandatory quarantine >> university of notre dame here >> reporter: back in south bend as students return to campus some are already raising concern. >> so far socially distancing seems not great. >> reporter: rising junior is worried about contracting covid is taking a leave of absence >> i don't want my son sick. i don't want him getting anyone else sick. >> reporter: even notre dame's president is face criticism after posing for this picture with students, mavericked but not di

i am a graduate of duke university. got a scholarship there, but not a basketball scholarship i assure you. but i would like to own an nba team. i have never had the chance to do so. but mark cuban is someone that did that at an early age. as a young man, he bought an nba basketball team and won a national championship. because of that, i always admired his sports prowess and business acumen. me,hildren have always told dad, you've done ok, but mark cuban is a lot better. you have at an early age made some money. you made an enormous amount of money when you sold broadcast.com to yahoo! and made over a billion dollars, then you bought a basketball team. then you have a shark tank emmys that won an award. you are well regarded by entrepreneurs. presidents of the united states call you for advice. there is something about your life that isn't perfect. mark: i have kids. i have a 16-year-old daughter and a 14-year-old daughter. that is all any parent needs to hear. it doesn't matter what you have or don't have. oldest daug

those newspapers are at duke university now thank god.mind when i'm thinking about what we are dealing with with the electronic information, so that we don't get into the position where we've lost everything because of the security things, deck technology, all kinds of issues. >> and the security thing, that becomes even more of an issue with the technology, the library of congress for instance has storage modules, think amazon and what those warehouses look like. in fort meade military base, the electronic environment in terms of security and making those transitions as technology progresses that's a major challenge too. >> exactly. we are doing a lot of work with the industry to educate them about what the needs are around tools that in my case agencies need to create and maintain their records. the situation of the federal government is very much the situation that i remember from university settings where every agency, every faculty was able to go off and build their own system or by something off the shelves and there was no interope

a new study from duke university reveals which masks work the best. the scientists had someone say the phrase "stay healthy people" over and over, first without a mask and then again with 14 different types of masks. a computer counted the number of particles inside each mask. they founding the most effective mask was the fitted n-95. that's not surprising. that's what the doctors use, the medical workers. that was followed by surgical masks and cotton masks. least effective were neck fleeces, man danas and knitted masks. most importantly the experts did find that any mask is better than no mask at all. >>> an important ground-breaking in san jose today. city leaders gathered at the future housing site just east of willow glen. modular units will provide more than 100 beds for homeless families. habitat for humanity will lead that construction which becomes needed every day more. >> and we also are building because we have a crisis within a crisis. the need for housing is tremendous, and now we have a health crisis on top of that. >> that we're able t

before that, you were a graduate of the two best schools to go to in combination -- duke university and the university of chicago law school, right? adam would you happen to go to : as well. david: right. you cannot do any better than that. let's start with the nba today and how it is doing. honestly, since you have been commissioner, revenues are up. ticket sales are up. the owners' value of their teams is up by about three times. so are you adequately paid for the job you're doing, do you think? [laughter] today, the nba seems to be at its peak. right now, it is very popular all over the world. why do you think it is that nba basketball is so popular around the world whereas major league baseball and professional football is not as global a sport? is thatrt of the reason it has been an olympic sport since the 1930's. i think that has made a big difference in that it is a sport that has been played around the world. it was actually invented by christian missionaries. james naismith was a christian missionary, and the game, shortly after it was invented in springfield, massachusetts, br

quick summer graduate of duke university. i got a scholarship to go there, but not a basketball scholarship, i assure you. i would like to own an nba team. i would like the chance to do so, but mark cuban is somebody who did that as -- at an early age. he bought an nba best about team and won a championship with it. because of that, i've always admired his sports prowess, his knowledge, and his business acumen. my children always tell me that -- tell me, "dad, you've done ok, but mark cuban is a lot better." made someoung age money and made an enormous amount of money when you sold broadcast.com to yahoo!, made over $1 billion. then you bought a basketball team. then you have an "shark tank" series that is very successful. your well renowned by entrepreneurs all over the world. are well renowned by entrepreneurs all over the world. president scalia for advice. what is wrong with this life? has to be something that's not perfect. >> i have kids. i have a 16-year-old daughter and a 14-year-old daughter. the minute my daughters

a separate duke university study looked at 14 kinds of masks. the n95 performed the best. a surgical mask worked well, but bandannas were not effective and some so-called neck gaiters may not offer any protection. >> i guess i'll have to double up now. >> reporter: now, the c.d.c. is urging people to avoid masks with one-valves or vent because unfiltered droplet could be chalked possibly allowing the awarer to transmit coronavirus. >> it should fit snugly against your face with no gaps. the fabric should be densely woven. >> reporter: stores in alameda county, california, have already banned masks with vent. on wednesday, american airlines joined a growing list of u.s. carriers banning them. southwest is also prohibiting bandannas and other face coverings not secured under the chin. c.e.o. gary kelly: why is it so hard to get a mask policy that doesn't change every two weeks? >> that's a great question. i think there's an evolution in the learning about how effective the masks are. , you know, as we learn new information and get new information from the c.d.c., we're updat

researchers from duke university used lasers to better visualize how well different masks stop thoseroplets. >> surgical mask, trial one. go. >> stay healthy, people. >> reporter: the more particles visible in the light, the less effective the mask. though they only ran the test once, their study found the fitted n-95 mask, the surgical mask and the poly-cotton mask did best. >> this one here is fleece. you see lots of little particles. >> reporter: researchers said the fleece gaiter they tested actually resulted in tinier particles being released than speaking without a mask. >> these little droplets could be problematic, because they have an easier time being carried away by air. >> reporter: but experts don't know whether tiny droplets necessarily increase the chance of transmitting the virus. david, it's important to stress that this was a limited study. researchers still don't know what size or how many particles it takes to make someone sick. the bottom line is health experts agree, any mask is better than no mask. david? >> all right, marcus moore tonight. marcus, thank you. >

duke university tested different masks. bandana and neck gators stink while sun cal cotton and n95 masks performed well. look at this one. that one did very well. and this one. this is from my personal collection. this one kept me from getting the coronavirus. but it got me arrested in phoenix. i guess it's not appropriate attire for midnight mass. i want to comment about -- there are people suffering from the living situation of covid, not covid itself. but the living situation. most of them are living in apartments. new yorkers and other city dwellers would brag, we are not like in alabama where we need a backyard, because my backyard is central park. now it's not the case anymore. it's the apartment living that's driving everybody insane. because you are not alone. you are with a baby or two children. >> i have an empty room, thank god. but yes, i am back in therapy. from my new york apartment. it's -- the kids toys things make no sense. they will be the on ones having fun in any of this. there is truly nothing to do. we

. >> researchers at duke university studied several kinds of face coverings and how they protected peoplerom the coronavirus and they were specific about the kind of face coverings that do not work. what are the takeaways here? >> the bottom line is the safest mask would be the n95 mask, the kinds that you see doctors wear in the hospital, but that's not the kind you want to wear every day if you're out and about. they're not very comfortable. the ones that work are the surgical masks and the cotton mask. you have to make sure they have three layers, three-ply. the ones in the study were three layers. the ones that did not do well were the ones that were knit and made out of fleece. >> dr. ali, there's a potential shortage of health care workers and 26 states are expected to face a shortage of icu doctors. >> when we think of icu beds it's not just the bed but the staff that makes the icu tick. it's not just the icu beds but very concerning that many states in the south are going to see a shortage of staff members who can staff these icus because you can always turn a cafeteria or a medic

i am a graduate of duke university. i got a scholarship to go there, but not a basketball scholarship , i assure you. ♪ but i really would like to own an nba team. i have never had the chance to do so. but mark cuban is someone that did that at an early age. as a young man, he bought an nba basketball team and won a national championship. because of that, i have always admired his sports progress, his knowledge, and his business acumen. my children always told me, dad, you've done ok, but mark cuban is a lot better. mark, let me ask you this. you have, at an early age, made some money. you made an enormous amount of money when you sold broadcast.com to yahoo! and made over $1 billion. and then you bought a basketball team. then you have a "shark tank was quote series that won an emmy tank" series that won an emmy award. you are well regarded by entrepreneurs all over the world. presidents of the united states call you for advice. what is wrong with this life? is there something about this life that is not perfect? mark:

. >>> researchers at duke university say it's actually worse than not wearing a mask at all. they developed a test to figure out which masks are most effective. they did so using a box, a laser, a lens and a cellphone camera to visualize the pattern of respiratory droplets. bandannas and neck fleeces performed the worst. >> it's relatively comfortable because it doesn't restrict air very much. so what we found is that many more droplets got through those fleeces than would get through, for example, a simple cotton mask. >> researchers say a fitted n-95 mask is most effective, but surgical masks and two layer cloth masks also performed well. activities like shopping put you most at risk for coronavirus. choose answers to various situations and then see what the experts have to say about it. speaking of experts we have a weather expert. >> we do, indeed, ama. >> you talking about me? >> we are. >> right, it's friday. yes, it's going to warm up. the warmth is getting to our heads. let's take a look at a sunset from tonight. sun went down at 8:11 from our east bay hills camera, w

. >> reporter: at duke university students are greeted with covid tests.y freshmen and sophomores will be housed on campus. >> this is a difficult but a necessary decision. >> reporter: at notre dame where classes start monday the school's president says all students will be tested before returning. >> we'll continue to test them. it's cd everybody's health. >> reporter: even with precautions there are some issues. at iowa state university, 66 students tested positive for covid during move-in. the school has set aside space on campus to isolate them. at syracuse a group of students placed on interim suspension for breaking the school's mandatory quarantine. >> the university of notre dame here. >> reporter: back in south bend as students return to campus some are already raising concerns. >> so far socially distancing seems not great. >> reporter: this rising junior is so worried about contracting covid he is taking a leave of absence. his virtual learning application denied. >> i don't want my son sick. i don't want him getting anyone else sick. >> report

a duke university physics professor bandannas may put out more droplets than no mask at all. with a lot of kids going back to school, you know, even though not at the time, parents are thinking, what are the best masks? we want to know more about that in rankings when it comes to effectiveness, so we bring in our own mask expert and data scientist from usf, jeremy howard. good to see you again. only half of your face. >> hello there. >> i want to start by asking if you agree with that duke professor a professor and saying the neck gator is not good. >> it can fold down easily. and there's things you can do to help. this is quite cool, you can buy them from amazon that have little holes on the ears and stop it from falling down and then got a second problem, there's a big gap around the nose. and for 2 cents, you can buy one of these necklace to make that, and then the problem that the extra material these things are made of, is very stretchy, and kind of see-through. so then, you need to deal with that, and actually, this one has a pocket where you can insert a people of pape

. >>> researchers at duke university say it's actually worse than not wearing a mask at all. they developed a test to figure out which masks are most effective. they did so using a box, a laser, a lens and a cellphone camera to visualize the pattern of respiratory droplets. bandannas and neck fleeces performed the worst. >> it's relatively comfortable because it doesn't restrict air very much. so what we found is that many more droplets got through those fleeces than would get through, for example, a simple cotton mask. >> researchers say a fitted n-95 mask is most effective, but surgical masks and two layer cloth masks also performed well. activities like shopping put you most at risk for coronavirus. choose answers to various situations and then see what the experts have to say about it. speaking of experts we have a weather expert. >> we do, indeed, ama. >> you talking about me? >> we are. >> right, it's friday. yes, it's going to warm up. the warmth is getting to our heads. let's take a look at a sunset from tonight. sun went down at 8:11 from our east bay hills camera, w

experts at duke university say they should think of covid care and planning and personal protective equipment, mobile capacity in places like storm centers. is this more good advice to go unheeded? >> yes. look at the states most susceptible, florida and texas. you're not going to have electricity, you're not going to have running water or find your clothing sometimes. this is a potential catastrophe upon a disaster. shelters need to be prepared with cleanser, with protective devices, with separation of people. it could be horrendous. >> and that's exactly what is not needed at this point in time. thank you so much. good to see you. >> you, too, john. >>> still to come on "cnn newsroom," democrats with gun reform back on the agen again reinventing. it's what small businesses do. with comcast business, your small business can work faster, with powerful internet from the nation's largest gig-speed network. work safer, with all your connected devices automatically protected by securityedge. and work anywhere, with comcast business at home, our new business-grade internet solution for remote work

for years at duke university.t, i would assume that p mr.ence was speaking to the suburbs of raleigh, north carolina. you know a lot about that. how is he speaking to the suburbs like mooresville and the rest of raleigh, north carolina, differently than mr. biden or senator harris will speak to those suburbs? >> donald trump is really the first modern american president who hasn't sought to broaden out historical support beyond his core partisan base. the republican convention so far is a good encapsulation of that strategy. their bread-and-butter voters he is talking to are exactly like the one in north carolina. by and large, republicans are sticking to the standard gop playbook. they are maligning democrats as purveyors of socialist policies and biden is captive to what they call the radical left mob. that is what we expected. that is what we have gotten so far. we have heard some about policy, but more so about opposition to democrats. republicans have offered no official party platform, which some say is a re

great joy in speaking with jonathan quick of the rockefeller foundation, managing affiliated with duke universityourse, his wonderful book, "the end of academics." we need an update, and the update to me is the resounding success of new york state, not only on a log chart as concave, but there seems to be a real d acceleration -- a real deceleration of the news. how did they do it? dr. quick: they did it by applying the basic techniques we have available to us. we have seen in country after country and now state after state in a growing number that if you get the majority of a population following those personal protective habits, distancing, face masks, theseshing, avoiding super spreader large indoor gatherings, and you also make some evidence stations -- some adaptations in your workplace and communities, you can drive this virus back. that is what it is been. it has been a collective action. it has been what you might call herd behavior. we don't have herd immunity yet from a vaccine. it will be a while. behavior ifve herd all of this people take those lessons and apply them in our daily live

. >> duke university did a study on the fleece masks that say they are less safe than wearing no mask. you can see why this is a waste of taxpayer money. >> reporter: in a statement the district said that the classroom provides a teachers and students the tools resources and support to teach all students. emphasizing that none of the positive cases were contracted on campus which is proof that their system is working. >> the matter what safety conditions they put up it's not as good as working from home and sheltering in place.>>> this is ktvu fox 2 news at 6:00. >>> arrivals turn to running mates. he united to defeat president donald trump. today joe biden and kamala harris made their first campaign appearance together. >> kamala harris is a smart, tough, experience , and a proven fighter for the backbone of this country. >> america is crying out for leadership. yet we have a president who cares more about himself than the people who elected him. >> the democratic ticket makes the debut as the race to the presidency he thought. good evening i am julie haener. >>> and i'm frank somerv

. >>> a new study by duke university reacher stirs saying most facial coverings work to keep the coronavirus, fleece or bandannas can actually spread the virus. scientists say that then facial coverings actually breaks up droplets that carry the covid- 19 virus into smaller particles that just hang longer in the air. that could mean using a gator is worse than having no mask at all. the best mess, still they and 95 mask without a valve and surgical mask and they are generally for medical workers who have direct contact with infected patients. >>> b.a.r.t. board of directors is working with the police is in review board to discuss police reforms for the b.a.r.t. police department. during a special joint meeting yesterday, b.a.r.t. heard public come on the issue. they are considering ways to shift away from using officers to handle the issues of homelessness, substance abuse and mental health on trains and in stations. >> i hope we are on the view, q fair enforcement in the use of force must also be scrutinized. >>> the board said it hopes of recommendations by october when it begins to revise