here's manuel bojorquez. >> south florida's beaches are iconic. but what's below the water is spectacular. a maze of coral that stretches 300 nautical miles and is home to hundreds of marine plants and animals. f at reef is disappearing says university of miami marine biologist stephanie schopmeyer. >> over the past 30 to 40 years we have seen them drastically not recovering, changes in the water chemistry, overfishing, pollution. >> reporter: if ten years parts have lost nearly half the coral. they she is with rescue the reef. >> how important is that to what >>u do? >> it's very important. any time a citizen scientist comes out with us, we are able to put more corals on the reef than we would normally be able to. >> reporter: it's like lyderwater gardening. they harvest newly grown coral from one part near key biscayne to transplant to another securing them to the ocean floor. planting them is a delicate time-consuming process. >> here we're doing a stress g st. >> biologist ross kunning is monitoring the survival rate. >> we're trying to identi

>> mason: manuel bojorquez with the trouble in caracas. russia retaliated quickly after congress approved sanctions against moscow for meddling in the 2016 election. here's elizabeth palmer. >> reporter: president vladimir putin's main message: don't mess with russia. it came across loud and clear on the country's navy day with its fighting ships on parade and then again only hours later when he announced drastic cuts to america's diplomatic mission here. "we waited for quite some time for u.s.-russia relations to get better," he told the interviewer, "but realized it wasn't going to happen any time soon." so he decided 755 u.s. embassy personnel, about two-thirds of the total, would have to go. about 100 are american diplomats, who will return to the states, but the vast majority are russian support staff who will lose their jobs. putin's also ordered the u.s. barred from its storage facility in moscow and its beautiful country house in a leafy suburb. relations with the u.s. have grown worse ever since president trump was elected, someth

here's manuel bojorquez. >> reporter: for norah sandiga, friday night means play time with the kids. >> i love her as one of my children. >> reporter: her children are from so-called mixed-status families. the kids are citizens born in the u.s., but the parents are undocumented immigrants, many facing the threat of deportation. there are hundreds of thousands of them in immigrant communities like homestead, florida, where sandigo has done something remarkable. look at that smile. she's become the legal guardian, not just for this group, but all of these. each of these files represents one child? >> one child. >> reporter: and how much do you have here? >> 1,029. >> reporter: 1,029? >> uh-huh. >> reporter: wow. sandigo spades every day fielding calls for worried parents looking the sign over legal guardianship in case they are deported. >> nobody knows where they go. nobody can come. they have a roof. they are eating. this room is for food. >> reporter: though she can't house all of them, she helps provide basics and collects toys to give away to the children and their families. while

qu mason: manuel bojorquez on ele venezuelan-colombian border. still ahead on the "cbs evening news," o.j. simpson rakes his case for parole. and hollywood got it wrong, for the t-rex running was no walk in the "jurassic park." was no walk in the jurassic park. so i use restasis multidose. it helps me make more of my own tears, with continued use, twice a day, every day. restasis multidose helps increase your eyes' natural ability to produce tears, which may be reduced by inflammation due to chronic dry eye. restasis multidose did not increase tear production in patients using anti-inflammatory eye drops or tear duct plugs. to help avoid eye injury and contamination, do not touch the bottle tip to your eye or other surfaces. wait 15 minutes after use before inserting contact lenses. the most common side effect is a temporary burning sensation. your eyes. your tears. ask your eye doctor about restasis multidose. mmmm. mmmm. mmmm... ugh. nothing spoils a moment like heartburn. try new alka-seltzer ultra strength heartburn relief chews. it's fast, p

manuel bojorquez, just off miami beach. >> quijano: still ahead. to get the flu vaccine: with no tears. she's nationally recognized for her compassion and care. he spent decades fighting to give families a second chance. but to help others, they first had to protect themselves. i have afib. even for a nurse, it's complicated... and it puts me at higher risk of stroke. that would be devastating. i had to learn all i could to help protect myself. once i got the facts, my doctor and i chose xarelto®. xarelto®... to help keep me protected. once-daily xarelto®, a latest-generation blood thinner... ...significantly lowers the risk of stroke in people with afib not caused by a heart valve problem. it has similar effectiveness to warfarin. xarelto® works differently. warfarin interferes with at least 6 blood-clotting factors. xarelto® is selective, targeting just one critical factor interacting with less of your body's natural blood-clotting function. for afib patients well-managed on warfarin, there is limited information on how xarelto® compares in reduc

manuel bojorquez reports tonight from its border with colombia. >> reporter: at this border checkpointluggage is the easiest way to spot venezuelans looking for a new life. marcos gonzales crossed into cucuta, colombia, with his wife and son. a lot of pain? "this is real life." tens of thousands of venezuelans cross into colombia, even just for the day, in search of food and work, but now they're fleeing the deadly fighting between the venezuelan military and protestors who blame the government for the country's economic collapse. >> ( translated ): she said you need to go. >> reporter: jose oropeza fled two months ago, leaving behind his wife and two children, because he feared becoming a political prisoner. why? >> ( translated ): because i see children who have nothing to eat, people who are hungry, the elderly knocking on my door for coffee or food. medicine. >> reporter: medicine is also in short is up lie. on the colombian side of the border, cucuta's main hospital used to see one or two venezuelan women a week for prenatal care. now it's as many as five or six a da

manuel bojorquez reports tonight from its border with colombia. >> reporter: at this border checkpoint, luggage is the easiest way to spot venezuelans looking for a new life. marcos gonzales crossed into cucuta, colombia, with his wife and son. a lot of pain? this is real life. tens of thousands of venezuelans cross into colombia, even just for the day, in search of food and work, but now they're fleeing the deadly fighting between the venezuelan military and protesters who blame the government for the country's economic collapse. >> translator: she said you need to go. >> reporter: jose oropeza fled venezuela two months ago, leaving behind his wife and two children, because he feared becoming a political prisoner. why? >> translator: because i see children who have nothing to eat, people who are hungry, the elderly knocking on my door for coffee or food. >> reporter: medicine is also in short supply. on the colombian side of the border, cucuta's main hospital used to see one or two venezuelan women a week for prenatal care. now it's up to five or six a day. some have crossed to give b

here is manuel bojorquez. >> beaches are iconic. what is below is spectacular.al that stretches 300 nautical miles and home to marine plants and animals. that reef is disappearing says university of miami marine biologist, stephanie shotmeier. >> over the past, 30, 40 years, we have seen drastic declines. and it has been mostly due to climate change. changes in the water chemistry. overfishing. pollution. >> reporter: in ten years, parts of the reef lost nearly half the coral. shotmeier is with rescue a reef a group which enlists the help of volunteers called citizen scientists. >> how important is that to what you do? >> very important. any time a citizen scientist comes out with us. we're able to put more coral on the reef than we would be able to. >> reporter: it is like underwater gardening. they harvest newly grown coral from one part near key biscayne to transplant to another. securing them to the ocean floor. planting them is a delicate time consuming process. >> here we are doing a stress test. >> biologist, ross cunning is monitoring the survival rate.

here is manuel bojorquez. >> reporter: for norah sandigo, friday night means play time with the kids. >> one of my children. >> reporter: her children are from so-called mixed status families. the kids are citizens, born in the u.s., but the parents are undocumented immigrants. many facing the threat of deportation. there are hundred of thousand of them in immigrant communities, like homestead, florida. where sandigo has done something remarkable. she has become the legal guardian, not just for this group, but all of these. each of these files represents one child? >> one child. >> how many do you have here? >> 1,029. >> 1,029. wow. >> uh-huh. >> sandigo spend every day fielding calls from worried parents looking to sign over legal guardianship in case they're deported. >> nobody knows where they go. nobody think they have a roof, if they are eating. this room is -- for food. >> the she can't house all of them. she helps provide basics and collects toys to give away to the children and their family. while the obama administration deported some parents, it is estimated more than 100,00

manuel bojorquez, cbs news, homeste homestead, florida. >>> coming up next, why would a company pay good money to have a bear rip its product to shreds? later, for the winner, a 27,000 calorie lunch. ♪ >>> few things are as scary as seeing a bear wandering through your neighborhood. but a company in the west is putting some of those bears to work in quality control. here is carter evans. >> reporter: when it comes to grizzlies versus garbage can most are no match. and these particular bears are some of the best in the business at tearing thing as part. are some better product testers than others? randy gravette helps tempt bears to break into containers at the grizzlies and wolf discovery center outside yellowstone national park. >> when bears get into unnatural food sources it is bad for bears and bad for people. >> the eight resident grizzlies were brought here because like these bears they got too comfortable foraging for human park naturalist, tutt fuentevilla. >> once they have one interaction where they decide a food was easy, and seemed safe, then they're going back to the food so

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manuel bojorquez has more. >> reporter: election day erupted again into violent clashes between anti-government protesters and national police. the opposition did all it could to block roads to polling stations and otherwise disrupt the voting. they see president nicolas maduro's effort to rewrite the constitution as another try at power grab. >> some think it's a step toward grabbing power. the man said not a step. we're in. there was a vote to restore law and order and he thumbed his nose at international opposition. the u.s. is among those threatening further sanctions. >> if you do not decide, who decides for you, he said? donald trump? if you the venezuelan people do not decide, who will decide. in some pro-maduro areas, voting was uneventful. but in the street over the past four months more than 100 people have been killed in violent skirmishes. the anti-maduro movement believe his social policies are to blame with the country's policy. they believe it is rigged in favor of president maduro's government, so even a win for the president here is likely only setting up the stage for more tur

the polls in venezuela but if they had hoped for a fresh start, this wasn't the day for it, manuel bojorquezorts from caracas. >> reporter: election day erupted again into violent clashes between antigovernment protestors and the national police. the opposition did all it could to block roads to polling stations and otherwise disrupt the voting. they see president maduro's effort to rewrite the constitution as yet another power grab. >> nope, no passo. >> reporter: there are people who think this is a step towards dictatorship, what do you think? "no, not a step," said this man, "we are in a dictatorship." the president went to vote early and called this the most important vote in the nation's history. "a move to restore law and order," he said. and he thumbed his nose at international opposition to the vote. the u.s. is among those threatening further sanctions. "if you do not decide, who decides for you," he said. "donald trump? if you the venezuela people do the no decide, who will decide." in some pro-maduro areas voting was largely uneventful. but in the streets over the past four month

>> manuel bojorquez in venezuela.ou. >>> australia has increased security after terrorists threatened to bring down a passenger plane. law enforcement raided a home over the weekend. the plot involved putting a device on the aircraft. anyone have not yet been charged. >>> a manhunt is going across alabama after a dozen inmates escapes from jail outside birmingham. only one is still on the run. the police recaptured the 11 shortly after they ran. two of the inmates were facing attempted murder charges before their escape. it's not clear how the men were able to slip through the jail security. >>> thousands of american jobs building auto factories may be lost to imported workers. ahead, how contractors are usi >>> a police widow who gave birth to her murdered husband's baby years after his death speaks out. >> only on "cbs this morning," her story of her daughter's birth and why she was determined to have the officer's child. >> you're watching "cbs this morning." flonase sensimist allef helps block 6 key inflammatory s

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manuel bojorquez is in venezuela with the growing constitutional emergency. manuel, good morning. >> reporter: good morning. this is the aftermath of yesterday's violence. the u.s. is vowing sanctions on venezuela as early as today. that newly elected 4,500 feet assembly will have sweeping powers to rewrite the constitution. no opposition members were among the more than 5,000 names on the ballot, further dividing this polarized nation. police and protesters battle as they have for months in the streets of venezuela. demonstrators believe the election continues to hurtle the country toward dictatorship with president nicolas maduro and his socialist party at the helm. what do you say about this election? constitutional fraud. >> fraud. protesters say they were threatened with ten years in jail if caught marmging the streets. >> we have so little piece of democracy and he's killing us of it all. >> by rewriting the constitution. >> absolutely. >> voting sites empty across the country as many of the venezuelans who favor the opposition stayed away from the polls

manuel bojorquez reports from caracas. >> reporter: election day erupted again into violent clashes between anti-government protesters and the national police. the opposition did all it could to block roads to polling stations and otherwise disrupt the voting. they see president maduro's effort to rewrite the constitution as yet another power grab. >> no. >> there are people who think this is a step towards dictatorship. >> no, not a step said this man. we are in a dictatorship. the president went to vote early. and called this the most important vote in the nation's history. a move to restore law and order he said. and he thumbed his nose at international opposition to the vote. the u.n. s. threatening further sanctions. >> translator: if you do not decide, who decides for you, he said, donald trump? if you the venezuelan people dupe not decide, who will decide? in some areas, voting was largely uneventful. in the streets over the past four months, more than 100 people have been killed. at least two today. in violent skirmishes. the anti-presidential movement believes his socialist policie

manuel bojorquez is on theboarder in colombia where the crisis is spilling over. manuel, good morning. >> good morning. this is the bridge that connected the two country a it only increase as the violence and instability in their kun u trs intensifies. the luggage coming through makes it look like an airport. some return home. mar cause gonzalez says he can't. his wife and son are coming with him. >> he had a heart surgery. >> there's no medicine she says, and he needs medication. on the other side of the border, protesters and venezuelans fighting policy. president maduro fired back yesterday. >> translator: yes, it's his fault. she said you can't have a baby there. you can't get medicine. the hospitals are contaminated. no, i don't know if venezuela will be able to recover from this. they hope the country will and hate to leave home. >> a lot of pain. >> translator: this is real life. >> reporter: this week colombia's president traveled to cuba, their ally, hoping to find a diplomatic solution. right now neither side wants to back down. the opposition says they'l

manuel bojorquez is on its border with colombia where the crisis is spilling over. nuel, good morning. >> reporter: good morning. this is the bridge that connects the two countries, and though it's always been a busy border crossing, the number of venezuelans walking this way into colombia only increases as the violence and instability in their country intensifies. the luggage coming through makes this look like an airport, but it's the bridge that spans the border between venezuela and colombia. thousands of venezuelans cross daily in search of food, medicine and work. some return home. but marcos gonzales says he can't. >> it's very difficult. >> reporter: his wife and son are coming with him. >> he had a heart surgery. >> reporter: there's no medicine, she says. he has autism too and needs medication. on the other side of the border, protesters and venezuelan armed forces clash almost daily. they are fighting over the socialist government's policies, which critics blame for the economic collapse. president maduro yesterday fired back at u.s. attempts to intervene.