reveal. 22 year old sarah sylvester a biomedical engineering grad sarah has been the mascot proudly still wearing the feet there the school's first-ever lead female mascot. >> i can see that joy light up in their face. it has given me a whole new perspective on life and one i hope i can continue to carry with me in my future. >> reporter: sarah telling us she's grateful to her professors and for the chance to be the mascot. >> byron: our thanks to david. that's fight line for this evening. catch our full episodes on

dan: breaking news.

on may -- a major hazardous mercury spill, worse than first thought. good evening and thanks for joining us. marina vista avenue. this is close to a couple of baseball fields and dog parks. dan: tim johns is live at the scene tonight. reporter: i'm here at the edge of one of the perimeters that's been set up here in downtown martinez. as much as one pound of mercury could have been spilled. they are still in the cleanup phase. how this happened, they don't yet know. crews have tracked the origin of the mercury to a trashcan outside of the amtrak station here in town. 9:00 monday morning, the garbage can was emptied into a pickup truck.

officials have found traces of mercury along the trucks route. that's why five blocks have been taped off around the station while crews work to clean this up. contra costa public health has said they are concerned about mercury being in the outdoor air. they are concerned about people who might have been in this area yesterday and are tracking it indoors where the mercury is getting into the airfare. >> we thinking, did i walk in that area in the street, if i did, let me take my shoes off and leave them outside and call the hazmat unit. we can give you further instructions as to what to do. reporter: has been closed since yesterday. there's no timeline on when it will reopen. tim johns, abc7news. dan: we sent out a breaking news notification as soon word first came into the abc7news room. be sure to have the latest news

and weather through the abc 7 bay area news app for your phone , enable those notifications. ama: new developments out of san francisco. san francisco leaders are formally demanding the release of the video and any evidence from the killing. brown was shot by a score -- security guard. the board of supervisors passed a resolution seeking whatever they can get from the district attorney's office and police department. rick jenkins has said releasing evidence before a final charging decision is made could compromise the investigation. >> what this is saying is, release everything that you can release. >> i believe that all of us who have public roles have a responsibility to affirm the legitimacy of our criminal justice system whenever that comes into question. >> we still need to organize and get in front of the district attorney, still need to organize and get in front of the police department, still need to organize and get in front of

walgreens. somebody has to give us that video. ama: the resolution doesn't make a release mandatory although the board did hand it could issue a subpoena. dan: berkeley cito counsel is discussing right now whether to name a new police chief even as the department deals with a scandal that led to at least one officer being fired over an arrest system. and allegations of racist text messages. jennifer lewis became the interim chief in march of 2021 and has said that she had no knowledge of the scandal which came to light last year. her appointment has been delayed because of the ongoing investigation which is supposed to be finished in july. lewis would make history by becoming the city's top cop. >> i'm proud to become berkeley's first woman police chief, first asian-american police chief, first openly gay police chief. i also bring two decades of law enforcement experience and knowledge in every division in our department. dan: this council has been

debating the appointment for roughly three hours tonight. ama: let's go out now for a live look from our sutra camera camera. we are keeping an eye out for a change in the weather on the way. sandhya patel is letting us know what to expect. sandhya: you will see fog first thing in the morning. then we will bring on the heat later on this week. let's look at a live picture right now. golden gate bridge is still visible. it won't look like that as we take a look at just the way it looked right before sunset. you can see the fog rolling in visibility fluctuating. for the next 24 hours, here's your planner. tomorrow morning, areas of fog. it will be breezy in the afternoon. still below-average like it has been for much of the week. once the sun goes down, temperatures will fall. fog reestablishes as we head toward 1:00. let's talk about the warm up. friday, you bump those numbers

into the 80's. watch saturday. 90's. it will feel like summer around here. 60's co-side. i will let you know how it will shape up for the second half of your weekend, coming right up. dan: we are keeping an eye on developing news at the u.s. mexico border. federal immigration authorities are now in place but they are seeing an increase in migrant numbers with the expiration of title 42 on thursday. that's the trump era policy that forces migrants back to mexico to try to slow the spread of covid-19. because that sending, border officials are bracing for big increases in crossings. president biden spoke about his administration's preparations. >> i spent close to an the mexican president today. we are doing all we can. the answer is, it remains to be seen. we have an overwhelming cooperation from mexico.

it remains to be seen. it will be chaotic for a while. reporter: -- dan: president biden deployed troops to us -- assist. even with title 42 in place, local nonprofit groups are helping immigrant families every day. some nonprofits are gearing up to help even more people looking for temporary shelter and support. lauren martinez has that piece of the story tonight. >> we don't turn any families away. we want to be able to support families when they arrive in this new country. reporter: with a surge of immigrants as title 42 is set to end thursday, some bay area nonprofits are expecting an influx of families. >> we are looking at 10 to 15 families per week. we could see that multiply after title 42 is lifted. reporter: in east hannah -- san jose, they help immigrant families with food and temporary shelter. >> we have a little bit of resources to be able to get hotel rooms for families for a

week or 10 days. we have survival packs packed with food. reporter: the organization is having discussions with the city of san jose and santa clara county on how to create a robust network of support for immigrant families. on thursday, they will be launching a hotline to streamline help. >> newly arrived immigrant families, to be able to call the number and we can into our office, get them stabilized. reporter: when title 42 restrictions were put in place, a doctor visited the border in south texas with her group. >> what's important in this dialogue is that these families are fleeing significant violence , significant life-and-death situations. reporter: there weren't large enough shelters in mexico to help so she saw the development of temp camps. >> they are children.

you look into their eyes and you see the parents and the love that they have for them to make a change. it's when you really understand that this is a human rights crisis. reporter: lauren martinez, abc 7 news. dan: tomorrow will be the fifth day oakland teachers will be on strike as there's no deal between the union and the oakland unified school district. the main sticking point remains the so-called common good items which include resources for students in need, climate initiatives, and more. the school district said that negotiations are making some progress. ama: let's get into tonight's abc 7 advancer. it's our way to get you ahead and informed about the headlines you will be hearing more about in the days to come. tonight, we are all about health. there are three big headlines we want to get you through. first, we are preparing you for the end of the federal covid-19

public health emergency. it's coming up this thursday. what does it mean for you? the cdc says most tools like vaccines, treatments, and testing will remain available. here's where you may feel it. insurance companies will no longer be required to reimburse you for the cost for at-home tests. those eight free tests per month you could get? gone. we are reminding you about this today because it's only the ninth so you still have a couple days to buy tests and submit for reimbursement. even though private insurance companies will no longer be required to cover the cost of testing, the government is encouraging continued coverage. ultimately, it's up to your insurance. for those on medicare part b, you will continue to have coverage for lab tests when ordered by a provider but the same will not applied for home tests. those on medicaid plans, you will continue to have test covered for free until the end of september 2024. what if you are uninsured? the cdc will continue to support

those who are uninsured or socially vulnerable but that's pending resource availability. now to our next item right here. that new update for women on getting breast cancer screenings. the u.s. preventative services task force is changing its recommendation on when to get mammograms to the age of 40 rather than 50 and screen every other year until age 74. keep in mind, many other groups such as the american cancer society have already recommended women start screening in their 40's. all this comes as breast cancer diagnoses are rising among younger women. mortality rates among black women remain persistently high. one doctor says the ultimate key here is early detection. >> if we look at all cases of breast cancer, when they are localized to the breast, the five-year survivals is that, the number is still pretty

high. it's about 90%. this is all contingent on finding it early. ama: public comment running until june 5. if you would like to share your opinion on this. that's on the u.s. preventative services task force website. finally here, we are tracking a key decision coming up tomorrow on birth control. a group of advisers will vote on allowing the nation's first-ever over-the-counter birth control pill. the pill is called open hill, a progesterone only medication. it's been on the market since 1973 but this change would allow it to be sold without a prescription. it has been endorsed by the american medical association and the american college of leg -- ob/gyn's. it's about breaking down barriers to accessing birth control and limiting unwanted pregnancies. >> you have to give people all the tools to protect themselves, protect their health. this is one great option that wh forward. ama: there have been concerns

over certain side effects. as well as if teens would be able to follow the pull instructions and weigh the risks versus benefits. tomorrow's vote would only be a recommendation on the pill. the fda is expected to weigh in with a final decision in the coming weeks. if approved, the drug could be on shelves this summer. we will definitely be keeping an eye on that. dan: ai. google set to give us the next chapter of the technology tomorrow. plus, the earthquake test. the record shake simulator years in the making and the results about what could happen as a result. larry: the warriors are less than 24 hours away from the end of their season, dynasty. of their season, dynasty. steve kerr on crucial i've been telling everyone. the secret to great teeth... ...is having healthy gums. crest advanced gum restore detoxifies below the gum line and restores by helping heal gums in as little as 7 days.

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dan: google will hold a conference. developers plan to spend a lot of time talking about artificial intelligence technology, especially its main ai chat experiment. it's expected to show how the elements are incorporated with google services such as search and messaging. google will also reveal its newest version of its foldable phone. discussion on ai regulations also happening across the country. elon musk made a comment directed at kamala harris on twitter sunday. he questioned the vice president's role in leading a roundtable discussion on regulating ai.

musk responded to a tweet saying , maybe someone who can fix their own wi-fi router wouldn't be too much at risk. -- too much to ask. it came after he was mentioned with a photo of a headline calling harris the next ai czar. ama: we are five days away from mother's day. many will be celebrating. this year will be an extra special one for local families whom others gave their kids the gift of an organ transplant. dan: j.r. stone profiles to bay area families whose mothers went above and beyond. >> this is francesca. we call her frankie. she is 18 months old. >> this is judge. she is my daughter, my second born child. reporter: two separate families, two little girls. both found to have a liver condition in the months after they were born. a condition that could have killed them. >> something always felt off to

me about her and the way that she looked much different than my husband and my firstborn. we are punjabi. typically, we are brown skin. she was so yellow. she looked like a simpsons character. it was awful. reporter: liver transplants were the best possible solution. the family was local online about her need for a liver in the world reacted. the post on social media was shared by not only steph curry's sister but punjabi singer --. more than 250 donor applicants came forward. more than half a dozen people said they would donate their liver. time was an issue. frankie's health was deteriorating. in both cases, mom stepped up. >> it was her third admission at

that point. they battled a lot of complications with liver disease. i said, it's me. i'm going to go through with it. what if i didn't go through with this? frankie would die. there's a lot of anxiety there. reporter: both moms on different days but in strikingly similar situations last year when through with liver transplants. they had part of their liver taken out at ucsf parnassus in san francisco and transferred to the other side of town at ucsf benioff children's hospital and mission bay. the girls then had their liver transplant surgeries. >> it means everything. she's doubled down on her family. >> she gave life to this baby twice. reporter: sigh has is a 14-year-old -- 14 month girl who likes syncing on the microphone. frankie is healthy, enjoying life with her twin brother. >> i will tell you

moms and parents out there who have to go through it day today and all the struggles, they are the heroes. reporter: call either one of these moms a hero and they will tell you they did what they had to do as a mother. >> i don't like calling myself that. i feel like any mom in my shoes would do the same thing. and i babies and so many children out there that need a transplant. whether it's a kidney or liver. if they can't, they are still heroes. you know? i feel like any mom and my situation, if she could she would. so i don't think that i'm special. i think we are just lucky and really blessed that we were able to. reporter: j.r. stone, abc 7 news. ama: powerful. dan: there are plenty of easy ways that you can become part of the donor process.

ama: to register, all you have to do is visit donate life.net. dan: a first of its kind earthquake simulator test in southern california. ama: it happened that uc san diego, using a shake table. engineers tested how a 10 story building would fare in an earthquake up to 7.7 magnitude. it's the tallest building to ever be tested on a shake table. dan: more than 20 organizations helped create the simulation which took more than 15 years to build. engineers made every piece of the building responsive to sudden movement. >> the bolts allow the stairs to shift back and forth without breaking. ama: the could be valuable information when considering the future of high-rises. this building was made out of wood which not only proved resilient but is renewable as well. dan: 15 years in the making. ama: 7.7. don't want to experience that

one. dan: we will experience some heat. sandhya: we are, just in time for the weekend. we have a few days to get ready for that hot weather. it will be heating up temperatures soaring this weekend. there's a moderate risk of heat illness. if you are particularly sensitive to hot weather, keep this in mind. hide a very high uv index. always a good idea to wear that sunscreen. high-pressure will be building in. we have big changes ahead. weekend. you will feel the heat. let's talk about the temperature trend. livermore, 66 degrees tomorrow. 71 thursday. you see that study climb all the way to saturday. 90's saturday and sunday. it will get hot. that's just a sampling of what's to come. live doppler 7. thunderstorms firing up in the mountains today.

all in association with an area of low pressure that's been keeping us cooler than average. that low is now in southern california. until it pulls out of here, we will have to deal with below average conditions. it has kicked up the wind. it's still a little breezy out there. rio vista, not as windy as it was earlier today. temperatures in the 40's and 50's as we take a look at a live picture from our exploratorium camera. beautiful view across the bay. foggy areas in the morning. breezy and below-average in the afternoon. big warm upcoming by the end of the week. warm to hot conditions for mother's day weekend for most areas with the exception of the coast. tomorrow morning, fog right around the bay. it might be sick so watch out. it gets blown away as the wind kicks uce clearing skies pretty quickly for the afternoon. morning temperatures in the 40's and 50's once again. fog will be thickest along the coastline so plan accordingly.

tomorrow afternoon, breezy but bright skies. upper 50's to low 70's. today was warmer. tomorrow, temperatures a little bit lower. if you are going to game five of the playoff series tomorrow night, tip-off's 7:00. it will be sunny outside. nice weather. mainly clear later on in the evening. low to mid 50's. i would take a jacketed firing you. fast-forward to the weekend, besides the heat, we are dealing with a system that will retrograde, bringing the opportunity for showers in the sierra between sunday and wednesday. we have to keep an eye on it. we may see some here. breezy and below-average tomorrow. temperatures rebounding into the 80's by friday. mother's day weekend, 90's inland. getting hot. getting hot. temperatures back off monday one prilosec otc each morning blocks heartburn all day and all night. prilosec otc reduces excess acid for 24 hours,

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bad decision afterwards rescission. the lakers victory puts them up 3-1. jordan poole missing in action when they need him the most your get aside from staff, who was going to score in game five? either win tomorrow or start your summer vacation. >> there were some plays during the game that i would like to have back, the players would like to have back. but it doesn't work that way. the main thing is to focus on the process and get ready to go tomorrow. we've been in the series for a long time, for a decade now. we understand the swings, the back-and-forth. larry: game five. nicoli oak it with a peace gesture. all nuggets. look out. christian bond throwing it down. denver of 21. yoga chad had 29 points. aaron gordon. nuggets role in game five. they take a three-to seriously. the a's have already punted on

last week's stadium site in vegas. they still want 400 million dollars in taxpayer funding. good luck. the teams in new york where aaron judge is back for the yankees, hitting hero for the a's. jordan diaz hit three home runs in this game, breaking out the thor hammer in the dugout. both teams had 10 hits. the yankees made the most of theirs, scoring 10 runs. the a's dropped their third straight. how about the giants hosting the nationals? casey schmidt, his watching anxiously. his first-ever career hit. it's a homerun. his family is going just bananas , as they should. he joins brandon crawford and bobby bonds among others who homered for their first hit as giants. logan webb dealing, struck out seven in seven innings of one run ball. the giants victorious.

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ama: t

as class of 09 now streaming only on hulu. back aftermath of a condo explosion in madison, wisconsin. some neighbors said they smelled gas in the area. but officials have not said if that was the cause for people were injured and everyone is accounted for. there were six units in the building. all of them were deemed uninhabitable. like cowboys from a john wayne movie. that's how a man from south carolina described the deputies who opened fire on him two years ago as he was having a mental health crisis. that barrage is now the subject of a lawsuit. here's a b cs lionel movies and a warning some of the upcoming video may be disturbing. this morning graphic video released by trevor mullinax is attorney of the moment. he says his client was shot at