Measuring pollution, block by city block. These are sampling gasses like ozone, no 2, co2. Chief scientist with acuma, built the sensing equipment added to google street view cars. You see the traffic. You see the streets. See air pollution. That data is uploaded to the internet in realtime. The result is a detailed map that shows where the air is most polluted. This hot spot is around 100 meters up the road. Persistent over a year. In the future this technology could provide city maps that show pollution levels in the same way we now see traffic jams on smart phones. This suggests if i walk down one block in the city here, get halfway down the block, the air will get worse. Exactly. You could also take this data and give a biking route, or a walking route, or a, or a rut to school. Where you would minimize your exposure to pollutants. We have ability to really make that pollution visible to everybody. Steve hamburg is with the Environmental Defense fund which helps pay for the pollution mapping project. He says detailed pollution maps could even Impact Real Estate prices. You dont right now know what you are buying. This will make it transparent. That puts more pressure again. Fix the problems. A technology that makes visible what is now mostly invisible. When it comes to air pollution, what you cant see can hurt you. John blackstone, cbs news, oakland. Today, more than 15,000 people celebrated americas 241st birthday by becoming new citizens. There were more than 65 ceremonies across the country. 76 people took the oath at Thomas Jeffersons monticello home, near charlottesville, virginia. Proud moment for them, by contrast, some young citizens face an uncertain future because their parents are undocumented. A florida woman made it her job to protect them. 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 socalled 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. Uhhuh. Sandigo spend every day fielding calls from worried parents looking to sign over legal guardianship in case theyre deported. Nobody knows where they go. Nobody think they have a roof, if they are eating. This room is for food. The she cant 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 100,000 u. S. Born children lost a parent every year. Sandigo is equally critical of the new president s aggressive policies. This is not a political issue. This is just humanitarian issue. They are american citizens. And they need help. [ speaking spanish ] gracias. Amen. She has two daughters. Taken in teenagers whose parents were deported to colombia. Whats it look to be without your parents . Its really hard. Yeah. I was so, so much its its been a year. She is helping guide them through the high school years. Hoping their family can eventually reunite. And that others wont be separated. Manuel bojorquez, cbs news, 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. Because your carpet theres resolve carpet care. With five times more benefits than vacuuming alone. It lifts more dirt, pet hair and removes odours. While softening every fibre because your carpet never stops working, resolve carpet care with five times benefits no, please, please, oh shrieks in terror heavy breathing and snorting no, no. The running of the bulldogs . Surprising. Whats not surprising . How much money aleia saved by switching to geico. Fifteen minutes could save you fifteen percent or more. Thats why new downy protect and refresh conditions fibers to. How your clothes smell can say a lot abut you. Lock out odors. New downy protect and refresh. It says you apply the blue one ok, letto me. This. Here . No. Have a little fun together, or a lot. Ky yours and mine. Two sensations that work together, so you can play together. Clearasil rapid action begins working fast for clearly visible results in as little as 12 hours. But will it stop this teen from being embarassed by her parents . Nope. So lets be clear clearasil works fast on teen acne, not so much on other teen things. 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 food. Park naturalist, tutt fuentevilla. Once they have one interaction where they decide a food was easy, and seemed safe, then theyre going back to the food source. Reporter problem bears are often euthanized or relocated. Here their unnatural skills are put to work. This grizzly named spirit loves to open coolers while the 600 pound bear uses the cpr method to pop a garbage can. For 500. Companies can find out if their containers can stand the test to the delight of those who come to bear witness. He kept managing to move that thing around until he cracked it right open. Now you know which cooler you might bring with you, huh . Yeah, the white one. Products that survive a 60 minute mauling can be sold as bear resistant, but not all are successful. Doesnt look so good. No. No. See the styrofoam. Even this steel trash locker was no match. Just ripped the hinges off. Right off. When you first started. 10 of the containers were passing the bear test. Now 65. The manufacturers are getting it figured out. Ultimate goal is to been fit the bears out in the wild. Saving bears, one coole at a time. Carter evans, cbs news, yellowstone. Still ahead a Fireworks Show turned dangerous. Better than a manual, and my hygienist says it does. But. 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The 1 brand used by septic professionals in their own tanks. Frances famous cycling race became the tour de crash today. Peter sagan used his elbow to get past Mark Cavendish who wiped out in a hectic finish. He broke his shoulder blade and out of the competition. So is sagan, disqualified. A Fireworks Show nearly got out of hand west of phoenix last night when an ember set fire to some dried out brush. Fire crews responded quickly. There were no injuries. The top athletes from the world of competitive eating were in new yorks coney island today for the nathans hot dog eating contest. 73yearold Richard Lefevre its the spam eating champ. And a number one kale eater. Kale its not a hot dog. Joey chestnut won the title for the tenth time, downing 72 franks and buns in ten minutes. Up next, descendants of the Founding Fathers bring the declaration of independence up to date. Its hard to believe that a bold declaration by a brand new nation would have even more relevance nearly 2 1 2 centuries later. But america is always changing. Striving to meet the ideals of the Founding Fathers. John trumballs painting declaration of independence shows Thomas Jefferson presenting the first draft to congress. The document signed by 56 men in 1776. We hold these truths to be selfevident. That all men. Are created equal. 241 years later. We. Mutually pledge to each other. Our lives. Our fortunes. And our sacred honor. The portrait was brought to life by descendants of the signers. An evolution of americas colorful palette gathered together by the company ancestry. We met three of them. My name is shannon lanier, sixth great grandson of Thomas Jefferson. Andrea livingston, eight great granddaughter of phillip livingston. When you see the new picture, new image. Picture of diverse people. Black, white, hispanic. Native american. Little built of everything. Asian. Thats more representation of what this country. Andrea livingston is half filipino and learned she is a descendant of one of the signers. It is a point of pride. But i think we have a long way to go. The idea that they were creating the ideas that they were putting into words, we still need to strive to make those ideas real. Laura murphy is livingstons new found cousin. Anything is possible in this country. If we can build some connection to our history, it may give us a greater degree of compassion and empathy and humanity which is what i think the country need right now. But that phrase, all men are created equal, what does that mean to you . How does that resonate with you today . It is a powerful statement. That, i still dont think rings true to a lot of people in this country. They dont feel that. Sometimes i dont feel that. Certain environments. But i think it is something that we can strive for. It is something that we can as a country tie to work hard to get to. We are so many different people. We look so different. We are so different. But we are all the same at the same time. Thats the overnight news for this wednesday. For some of you the news continues. For others, check back with us a bit later for the morning news and cbs this morning. From the Broadcast Center in new york city, im elaine quijano. Hi, welcome to the overnight news. Im demarco morgan. Nuclear threat from north korea reached an alarm new england level. Cbs news learned u. S. Officials believe all indications are that north korea did test launch an Intercontinental Ballistic Missile. The rogue regime claims the missile had the range to hit the United States. Independent Scientists Say it could have reached alaska. Now, new efforts are underway to diffuse the threat. Russia and china are proposing north korea should stop all nuclear and missile tests. While the United States and south korea stop all military exercises. That would in theory open a window for all parties to talk, and avoid war. Ben tracy is in beijing. The threat from north korea got more serious. Joi kim jung un said his goal is a nuclear tipped Intercontinental Ballistic Missile that could hit the United States and he may be one step closer to making that happen. North Korean State Television gleefully announced what it called an historic event. It claims kim jung un oversaw a successful test of this Intercontinental Ballistic Missile. It is calling the hosong 14. With range of 4,000 miles capable of hitting all of alaska, but not the continental United States or hawaii. During 11 missile tests this year, north korea demonstrated its growing capabilities. At a military parade this spring, it showed off missile canisters believed to contain icbms. Still not known if the regime has been able to miniaturize a Nuclear Warhead to fit top of the weapons. The claim that it is a major victory. An expert on Nuclear Weapons policy. Are we at a point where it is really more about containment . There is no way north korea will abandon Nuclear Weapons in the near term. Denuclearization in the near term is impossible. In his tweets, President Trump said, perhaps china will put a heavy move on north korea. And end this nonsense once and for all. China main not be so willing to help. It is furious at the United States after a u. S. Navy warship passed within 12 miles of an island in the south china sea, china claims as the territory. The u. S. Is selling 1. 4 billion worth of weapons to taiwan, further angering beijing. The Chinese Government is now calling for restraint and wants the u. S. To Start Talking to north korea. China is unwilling for further sanctions. If the regime fails, could have nothing to lose and led to war on the peninsula. President trump took aim at north korea leader on twitter, asking does this guy have anything better to do with his life. The launch comes days before, President Trump meets leaders at the summit in germany. The president was briefed latd last nice on north koreas Ballistic Missile launch. Day early, President Trump soak with president xi, about the weapons program. According to the new york times, President Trump told the Chinese Government the United States is prepared to act on its own in dealing with north korea. But the white houses official statement on the call, said that the two leaders reaffirmed their commitment to a denuclearized korean peninsula. The once warm relationship between the two president s has chilled as north korea continues its push for Nuclear Weapons. Yesterday, russian president vladamir putin hosted president xi in moscow. Putin is set to meet with President Trump for the first time friday. Still unclear if President Trump will address russian meddling in the u. S. Election or continued sanctions on russia. Yesterday, the kremlin said its patience with the u. S. Is running out. People in new jersey got a chance to enjoy the fourth of jaw lie holiday on reopened state beaches and parks. Governor Chris Christy and democratic law makers reached a late night budget deal yesterday. And the agreement comes a day after christy was spot lounging with his family on an empty state beach he ordered closed while residents gravitated to other beaches. The governor at his official summer residence. That did not stop a wave of criticism up and down the jersey shore. Bill is long overdue, reforeign minister that will have Lasting Impact on new jersey residents. Republicans and democrats struck a last minute budget deal monday night. It calls for an everhaul of the Largest Health insurer and exchange of 300 million in democratic spending priorities. This is the betts budget that we have had in ten years. Even as the budget stalemate came to an end. Governor christy continued to face questions over his decision to spend time during the long holiday weekend. Shame on those people who wanted to make this as if we were taking advantage of something. Christy and his family had almost ten miles of beach all to themselves as the result of the partial government shutdown. Be very clear. That is our residence. We have a right to be there. Thought it was insensitive and tone deaf. Lieutenantgovernor, running to replace christy. People cant use the beach. On twitter, christy said, 119 of the 130 coastline were unaffected by the shutdown. He was on the beach for 45 minutes and back in troen that day. This barrier carried a blunt message for the governor. Get the hell off the beach. Jab at his warning in 2011 ahead of irene. Christy should be ashamed. His own beach. Christy whose job Approval Rating sunk to 15 according to one recent poll was ridiculed on line. His image was photo shopped into movie scenes and used as a reminder of the bridgegate scandal. Another example of the politicians caring more about themselves than about us. The cbs overnight news will be right back. I got what you need. Ill be your ill, ill. Sarah . Cleaning up. Im joy bauer, and as a nutritionist i know probiotics can often help. Try digestive advantage. Its tougher than your stomachs harsh environment, so it survives a hundred times better than the leading probiotic. Also in chocolate. Probiotic bites it says you apply the blue one ok, letto me. This. Here . No. Have a little fun together, or a lot. Ky yours and mine. Two sensations that work together, so you can play together. Watermelons are classic fourth of july treat and summer favorite. Few know a kind of watermelon that is juicily slice of american history. Martha tichner got a taste and a lesson. Reporter dont tell nat bradford. That a watermelon. Nice one. Reporter is just a watermelon. Not only is the bradford watermelon. Cheers. Reporter the sweetest. Juiciest watermelon. You have probably never heard of. Trippy. Let alone, eaten. Very juicy. Uhhuh. Looks good. Rep