sheriff tells us why his department has made a conscious decision to destroy instead of sell their used weapons. >> we just choose not to do it that way so that we know we have full control of our firearms. >> reaction pouring in after the president of sonoma state is put on leave for insubordination, the fallout to his controversial pact with pro palestinian protesters. >> i feel like he was supporting the students and was actually pushing for a change. >> this letter was so tone deaf to the needs and concerns of the jewish community. plus california's governor brings politics into the halls of the vatican. >> open corruption, $1 billion to pollute our states. and a school project that's making a real difference, these north bay students came up with a top secret solution to a problem firefighters face every day. >> i was just really shocked. i

was really surprised. >> i think it's an amazing thing that these young people have taken on a challenge of this type. >> i feel like it was a huge win. >> good evening. thanks for joining us. one way law enforcement worked to protect and service is by getting guns out of the hands of criminals, but we've discovered each year thousands of guns once used by officers have been discovered at crime scenes. cbs news partnered with nonprofit newsrooms, the trace and reveal. we surveyed 200 police agencies nationwide and found a majority sell their guns when they decide to upgrade their arsenal. what about our local law enforcement? we found at least five agencies across the bay area that sell their weapons, but also two that choose not to. kelsi thorud has been looking into this and joins us with the details. >> for months we here at cbs news bay area as well as our

fellow cbs stations and the network have been digging into what appears to be a common policy at law enforcement agencies across the country when officers' weapons reach their end of use date. many departments sell those old weapons to gun dealers in exchange for a discount or credit towards buying new weapons for their departments, but some of the gun dealers in the u.s. are known to be irresponsible, possibly resulting in guns sold to them ending up being used in the commission of a crime. the problem is law enforcement agencies don't know which dealers are good and which are bad due to a federal law known as the tiahrt amendment which bars disclosing most gun trace information. now our information has found instances of old police guns being found at crime scenes, leading to the question is this policy of police selling their old weapons to dealers a good policy? now here of the in bay area we found five agents that

do sell their weapons. those are the alameda county sheriff's office, the san francisco police department, the santa clara county sheriff's office, contra costa county sheriff's office, and the oakland police department. we reached out to all five agencies. only one, the oakland police department, responded. they declined an interview, instead providing a short statement saying, "the oakland police department's standard practice is to exchange our dated service weapons for credit, which is in turn used to purchase new weapons." now according to records requests, it's estimated those five agencies alone have sold over 4,000 guns. that is something josh sharp with the brady center to prevent gun violence says is concerning. >> so when they're selling or transferring decommissioned firearms to gun dealers, they may not know that they are ultimately selling guns to gun dealers that supply the criminal market. >> now one way to prevent that

possibility is to not sell old guns to dealers at all. two departments in the bay area are choosing that approach, the san jose police department and the san francisco county sheriff's office. i sat down with one of them to find out why their department is choosing not to sell their guns. san francisco county sheriff paul miyamoto says in his 28 years of service at the sheriff's office it has always been their policy to destroy their decommissioned service weapons. >> we want to avoid any vestiges that we have any involvement in what happens to a firearm after purchase with a third party. >> reporter: unlike other departments who sell their old weapons to gun dealers, the sheriff says his agency only offers retiring officers the opportunity to buy their personal service weapon. all other weapons are sent out for destruction.

>> we just choose not to do it that way so that we know we have full control of our firearms from the moment we purchase them to the moment that they're distributed to our staff to the moment they're collected and stored and then to the moment they're destroyed. >> reporter: the sheriff told me he knows many other departments choose to sell their weapons to dealers and he can see why. >> because of the financial benefit of having that become a part of your overall budgeting or funding for other items or for other material things. >> reporter: but for his office the peace of mind that comes with destroying the weapons outweighs any financial incentive. >> there's always a challenge as to whether or not there's a need to fill that funding gap. i think that the concept of selling back to a responsible ffl, federal firearms licensee, is absolutely something which we would hope would lead to responsible gun ownership when purchased by that third party. the unfortunate part is what we mentioned earlier in terms of

gun safety itself, which is a lot of different crimes have been committed by people that are irresponsible or have had their firearm stolen and that's what we're challenged with is trying to find that balance. >> reporter: the sheriff told me he understands why the policy of departments selling their old weapons can be controversial. the number of guns on the streets in this country remains a huge issue. the sheriff says the most important thing any department can do is work to make sure every gun that is out there is owned by a responsible party. >> the ultimate goal is to make sure anybody who does possess a firearm legally does so responsibly and safely. i think that's part of the key to making sure that we get into a better place where there are less guns out there. >> reporter: his office is doing what they can to contribute to that solution by making sure their weapons are destroyed rather than added to

the count. >> i didn't know this, but it's hard to find out where they end up to trace them and that's because of a federal law on the data. are so is there any attempt to try to change that? >> yeah. it's interesting. josh scharf who we talked to with the brady center, his center there, they're actually lobbying to try to overturn the tiahrt amendment. they believe this data should be open to the public so everyone in the country knows where these guns are coming from. >> right, to have a beginning, middle and where it ended up. thank you. san francisco police arrested two men for a string of armed robberies that started with a fake online ad to sell a car. police say they listed a car for under $5,000 and then when interested buyers showed up, they were robbed at gunpoint. there were at least eight robberies between april 25th and june 5th of last year in the bayview and sunnydale neighborhoods. police say several victims were assaulted

and injured in the robberies. wild scenes on east bay streets this afternoon as this white four-door sedan led police on a chase through multiple counties. our chopper overhead as it swerved in between cars, no sign of it hitting anything, but there was noticeable damage on the back of the car. fog eventually blocked our view. the chp has not reported any arrests. students and local leaders are reacting to the decision to place sonoma state university's president on administrative leave. it comes after president mike lee sent out an email announcing a deal with pro palestinian protesters on campus without approval according to cal state university chancellor mildred garcia. kevin coe is at sonoma state with more on the president's controversial message and the fallout. >> reporter: the encampment here at sonoma state university is now gone, but tensions remain high for a lot of students i talked to on campus

today feeling unsafe, disappointment, a couple emotions students tell me they're feeling now after president mike lee was placed on administrative leave. >> it says just justice for mike lee and it has almost 900 likes. i think it's pretty representative how we feel. >> reporter: zack johnson is showing us fizz, a student only app at sonoma university. >> a lot of people have been saying we want mike lee to stay. we like mike lee. this he have hundreds and hundreds of likes. >> reporter: every student we spoke with on campus today says they support university president mike lee. yesterday lee was placed on administrative leave by csu for insubordination after he sent out a campus-wide email announcing an agreement with pro palestinian protesters. it included an advisory council for justice in palestine, a boycott of academic and

research institutions sponsored by israel and calling for a permanent ceasefire in gaza. >> i feel like he was supporting the students and was actually pushing for a change in the way the system works and helping palestine in the best way that we can as students and i don't think there was anything he did wrong. >> this letter was so tone deaf to the needs and concerns of the jewish community. >> reporter: jonathan mincer with jcrc bay area says he's thankful to csu chancellor garcia for swift action adding the email was problematic and painful for the jewish community. >> the president made clear that jewish voices are not welcome on campus and you don't need to marginalize one group to uplift another. >> reporter: lee later said the email was sent without approval of any cal state system leaders, but he continues to support students like jack johnson. >> i like mike lee. i want him to stay. >> reporter: now a big question

still left, will any of the agreements that president mike lee announced be honored? that's a question that campus representatives tell me is very complicated and still up in the air. some state lawmakers are speaking out in support of the decision to place lee on leave. state senator scott wiener sent a statement as a co-chair of the california legislative jewish caucus that called lee supporting an academic boycott totally unacceptable and evidence president lee is unfit to lead one of our great state institutions and state senator bill dodd who represents napa and part of sonoma county says, "i appreciate chancellor garcia's quick response to this situation. we need stability and thoughtful leadership at sonoma state." governor newsom used a high profile speech on climate change at the vatican to deliver some sharp criticism of former president trump blasting reports mr. trump met with

fossil fuel executives and asked them for $1 billion in donations to his election campaign. >> open corruption, $1 billion to pollute our states, to pollute our country and to pollute this planet. so i'm very proud of living in a state that is pushing back against that agenda to roll back progress. >> newsom was one of three u.s. governors invited to speak at the climate summit where he touted california's leadership on environmental issues regardless what happens at the national level. he also had an audience with pope francis who has urged global leaders to take action on climate change because the stakes could not be higher. still ahead, talk about impressive, meet the bay area students whose breakthrough invention could help firefighters on the front lines

and the teacher who inspired them to think outside the box. >> we want them to start inventing things that matter. what is next for this little cub after he was left in a pet carrier on someone

welcome back. firefighters put their bodies on the line in the most extreme conditions enduring scorching temperatures while wearing at least 45 pounds worth of gear. it is no

surprise sometimes firefighters need to be hospitalized for heat exhaustion while on the job. that's where a group of north bay students come in. as brian hackney shows us, they came up with an invention that could help firefighters feel a lot more comfortable. >> reporter: these are the problem solving whiz kids of calistoga high, but which problem to solve? heather brooks, their teacher, explains. >> we want them to form a bond in the community. we want them to start inventing for things that matter. >> reporter: so how did all this start? >> we went out and interviewed our community mostly organizations. >> every single group said they were very, very hot on their job, especially if they're outside. >> reporter: that group included ag workers outside in the hot sun and robert allen inside his marin art gallery? >> i run the art gallery, but there's something else i do. i'm assistant chief of the

muir beach fire department. hydration and exhaustion are big issues for firefighters. >> we want to keep them cool while they're fighting fires. >> reporter: the kids well remember the massive tubbs fire of 2017. >> there were alerts at 2:00 a.m., 3:00 a.m. that we had to leave. >> there were huge fireballs a field over and it was really scary. >> because of all the wildfires we've had in this area, we just picked the firefighters because we cared about them. >> and also our agricultural workers because they're mostly outdoors. >> reporter: 90% of the students here are latino, so with alex navarrete as lead scientist -- >> and i'm administrator. >> i'm the ceo. >> i'm the leading designer. >> reporter: they designed a cooling smartwear until their device actually did keep a firefighter cool in a hot sauna. so what is the breakthrough device? if we showed you, we'd have to kill

you. this idea is top secret. >> yes, yes. >> we're hoping to be patent pending by june and we don't have protection by the patent bureau yet, so anybody could copy it and we'd lose our ability to claim it's our device. >> reporter: instead the class is flying to mit as one of eight finalists in a national competition raising money for the trip. >> we have around $175,000 raised. our goal is 200,000. >> reporter: the real payoff is that this prototype actually works. >> i was just really shocked. i was really surprise and really happy with the results. >> i feel like it was a huge win. >> reporter: so does this firefighter. >> i think it's an amazing thing that these young people have taken on a challenge of this type and congratulations to them. >> reporter: as for mrs. brooks? >> we wouldn't be here today if it weren't for ms. brooks. >> ms. brooks is a 10 teacher. >> she has sacrificed so much for us and we can make a difference and i just really

appreciate her. >> reporter: just really wow, what a great project, what great students, what a great teacher. cities across the bay area are celebrating bike to wherever day. it used to be called bike to workday. the event encourages people who typically drive to start their day on two wheels. >> there are a lot more protected bikeways on the bike map this year, a lot more trails. the cities in santa clara county are doing a fabulous job of building out these safer bikeways which are the ones people want to ride on. so you're biking along the street, but you have physical protection from the vehicles. >> the vta set up a snack station on san jose's guadalupe river trail this afternoon where cyclists could stop for refreshments. there's plenty of sunshine inland today, but may gray has regripped downtown san francisco. temperatures earlier topped out at 80 degrees in san jose, but low 70s for concord

and fremont and around the bay and along the coast it was barely above 60. not much change tomorrow, but a few changes by early

let's get to our first alert weather. paul and i were just talking about the cycle anywhere wherever you want day. we did bike to work from the east bay. we were saying we would go from the east bay to

alameda and take a ferry over. >> right. you can get halfway across the bay bridge to treasure island, but then you're kind of stuck a while. >> we'll have to make that attempt one time. >> it will be a long way from pleasanton to alamo, biking home at midnight. we drove today for bike wherever you want day. temperatures weren't the problem today. we had fog sticking around and that's not going anywhere the next several days, very few changes to the forecast heading into the weekend. storm track remains well to a subtle history in the winds saturday, you'll barely notice the difference and a baby warm-up monday and tuesday which you'll also barely notice. current temperatures, mostly 60s, 57 in san francisco, still clinging to low 70s in san jose after you reached the daytime high temperature of 80 degrees,

cooling off quickly and the fog is on the move the rest of tonight. let's track it with futurecast. it spreads well into the inland valleys by early tomorrow morning. that will take its time backing up from the inland valleys the first couple hours after sunrise, but then plenty of sunshine breaking through and the fog makes it back to the coast by lunchtime. i don't think you'll see a lot of sunshine along the coast through the day tomorrow. short term, temperatures tonight are dropping down to the low to mid-50s, pretty consistent temperatures underneath that fog and low cloud cover, kind of keeps everybody on an even playing field, low to mid-50s in the santa clara valley, same thing inland in the east bay, coastal temperatures maybe a little closer to 50 degrees, 51 half moon bay. everybody's temperatures tomorrow morning within 2 or 3 degrees of normal for this time of year and the cool spots in the north bay valleys are dropping down to or barely below 50 degrees early tomorrow morning and then temperatures warm up, good looking dog walking forecast

for a couple good looking pups, shady and pawnee bringing us the dog walking forecast for tomorrow. they leave in san jose where the morning cloud cover doesn't last long. should make up to the mid- to upper 70s tomorrow afternoon, good dog walking weather across the board, temperatures coolest near the coast, around 60 there, mostly 60s and a few low 70s around the bay with a mix of 70s and a few low 80s farther inland and the warmer spots a couple degrees above 80 by tomorrow afternoon. the winds pick up late afternoon hours. you can see the strongest gusts mid to late afternoon into early evening in the 25 to 30-mile-an-hour range, the onshore breeze pushing fog back out. there will be plenty of fog and low cloud cover for the start of beta breakers on sunday, low 50s sunday morning. race starts at 8:00, should see a little sunshine breaking through the clouds but not closer to the coast. temperatures are cool

throughout the race. prepare for that regardless of what you're wearing or not wearing, as the case may be. it's beta breakers. temperatures are warmest monday and tuesday for inland part of the bay area, low 80s a couple days and a retreat to near average temperatures wednesday and thursday. the little baby warm-up is going to be barely noticeable around the bay, up to around 70 degrees by monday and tuesday next week, but a couple degrees worth of a warm-up there and barely even that along the coast. i think maybe 1 degree above 60 for coastal parts of the bay area monday and tuesday and plenty of may gray. it looks like memorial day weekend might get off to a cool start. >> have you done the beta breakers race yet? >> i have not. i can't this year. >> no. you just had your knee surgery. i did it once. >> what did you dress as? >> i had clothes on. i do know that. >> i assumed that. >> i don't remember what i dressed as. coming up, we'll pause for

a break, but on that note, the story behind this adorable baby bear cub ( ♪♪ ) you made a cow! actually it's a piggy bank. my inspiration to start saving.

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a bear cub dropped off at a northern california home is now being raised at a wildlife facility in south lake tahoe. this adorable cub is 2 to 3 months old. a day before mother's day someone left him

in a pet crate on the driveway. the cub was left with a note reading, "please help moses. he doesn't have a mother." moses was in good health but very tired, very hungry. so crews with the bear league fed him some baby bear formula. wildlife officials were not able to find the cub's mom. so moses was taken to a rehab center that takes care of baby animals that are unable to survive on their own. the person who found moses may have good intentions, but officials say just leave them alone since their mom may actually be nearby. we hope moses is okay. cbs evening ne >> what do we want? >> justice! >> when do we want it? >> now! >> maurice: new arrests at pro-palestinian demonstrations on college campuses at the height of graduation season. as president biden prepares to make a commencement speech at a georgia college, the school says it will halt sunday's ceremony on the spot if protesters interrupt.