You cant use violence with baby. Just give me back my stroller, please. This is the cbs weekend news. Ninan good evening. Im reena ninan. This is our western edition. Its been 47 years since the first earth day. Today, it was observed around the world with a focus on science. Rallies and marches were held in more than 600 cities from new york, chicago, and washington, to london, berlin, and sydney, australia. The officially titled march for science was not billed as a political event, but many who marched said they were concerned about threatened cuts to research programs, especially those aimed at fighting Climate Change. Our dr. Jon lapook is at the massive march for science on the national mall. Reporter there was plenty of h20 on this wet, dreary day in the nations capital. But the rain did not seem to dampen the spirit of the crowd. Clinical psychologist tim truemper from salisbury, north carolina. What specifically makes you worried . Climate change is my bigges concern. We cant stallur progress any more in this area. Reporter Kristin Sanborn from new jersey senses a change in climate for science. Im here today because im so upset about all the that science seems under attack now, facts seem under attack. Reporter speakers at the rally spanned many disciplines. Some people are going to say were politicizing science, but were not. Were defending it. cheers reporter . And ages. We cannot vote, not yet. But we will be heard. But our numbers here today. Reporter including crowd favorites like bill nye, the science guy. Im in the same place as bill save the world cheers reporter the march was billed as a nonpartisan defense of science, but some strongly attack the policies of the administration. Concerns of the marchers included an 18 , 6 billion proposed cut in funding for the National Institutes of health. Denial of what they see as established science, such as the threat of Climate Change. And a changing immigration policy. Foreignborn scientists fill nearly half of u. S. Postdoctoral research positions. Lillian knipp, kathy ely, and lucia teal live in baltimore. We were born in the 50s. We grew up in the 70ss. We watched progress. We were protesting back then, and were too old for this. We should not be out here protesting about things that we won in the sphernts expaitys. We were at the first earth day. Reporter on this 48th earth day, marchers turned out in communities large and small, including this tiny contingent on the north pole. In a statement, President Trump said, my administration is committed to advancing Scientific Research that leads to a better understanding of our environment and of environmental risks. And, reena, he went on to say that we should remember that rigorous science dends not on ideology but on a spirit of honest inquiry and robust debate. Ninan dr. Jon lapook in washington, thank you. As the huge march for science crowd rallied near the white house, President Trump made an unexpected visit to a Military Hospital today. Heres errol barnett. Reporter President Trump and First Lady Melania Trump visited the Walter Reed Medical Center in maryland today, presenting a purple hart to Sergeant First Class alvaro barrientos, injured in afghanistan. So i heard about this, and i wanted to do it myself. Reporter the president s unexpected visit comes as mr. Trump tries to make good on campaign promises. Since day one, i have been fighting for the hardworking people of this country. Reporter in his weekly address, mr. Trump highlighted his early accomplishments as he approaches 100 days in office. As a candidate, mr. Trump made this contract with voters, promising to, among other things, repeal obamacare, end illegal immigration, and pass an affordable childcare act by his 100th day. Hes now feeling pressure to show what g. O. P. Controlled executive and legislative branches can deliver. On friday, trump expressed confidence that Health Care Reform is coming after failing to get congress to repeal and replace obamacare last month. Well see what happens, but health care is coming along well. Reporter offering no specifics, mr. Trump told the Associated Press a tax reform proposal would be announced by wednesday or shortly thereafter, saying it would be bigger, i believe, than a tax cut ever. President said socalled dreamers fearing deportation should rest easy. Adding, we are after criminals. That is our policy. Today, at walter reed, President Trump and the first lady also spent some time with members of the Wounded Warrior project. President trump also announced what he described as a big rally to be held in pennsylvania on saturday. That will be his 100th day as commander in chief. Reena. Ninan errol, thank you. The Justice Department sent warning letters to officials in several socalled sanctuary cities on friday, warning them to prove that they are complying with federal immigration laws or risk losing money. The Justice Department, in a separate statement, accused new york city of being soft on crime. Heres roxana saberi. Reporter as the Trump Administration threatens to crack down on sanctuary cities sanctuary jurisdictions put criminals back on the streets. Reporter . Local leaders are pushing back. Its incredibly insulting. Reporter thats how new York City Police commissioner james oneill described this statement by the Justice Department. It singled out new york as a sanctuary city thats soft on crime. When i read that statement by d. O. J. This afternoon, my blood began to boil. Reporter oneill later tweeted, even with a million more people, new york city now has onefifth the crime of 1990 sound like were soft on crime . A recent analysis of f. B. I. Data by a progressive think tank suggested that sanctuary areas have significantly lower crime, possibly because Illegal Immigrants are less afraid to report crimes to police. On friday, the Justice Department also sent these letters to sanctuary jurisdictions, including neyochicago, and nevada, threatening to cut grant money if they dont cooperate with federal immigration authorities. At a Border Security facility in san diego, attorney general Jeff Sessions said the American People are tired of illegal immigration. We have lawful systems of immigration, and shouldnt that be enforced . Reporter sessions also addressed a controversial statement he had made earlier this week about a judge in hawaii who blocked the president s travel ban. One judge has overruled the Constitutional Authority of the president of the United States to protect america through his executive order. Reporter while the president s travel ban remains on hold, the Justice Department has given the nine sanctuary jurisdictions that received its letters until june 30 to comply with the law. But, reena, a number of local leaders say theyll remain defiant, even at the risk of losing federal funds. Ninan roxana saberi, thai. An American AirlinesFlight Attendant was grounded after a heated confrontation with a passenger, and it was all caught on camera while passengers were aboarding a flight from San Francisco to dallas on florida. Heres carter evans. Reporter the video begins with a woman in tears, inconsolable. A passenger on the plane posted this video on facebook saying that moments before it was recorded, a Flight Attendant violently took a stroller from a lady with her baby on my flight, hitting her and just missing the baby. As the woman sobbed, another passenger stepped in. Moments later, the Flight Attendant at the center of the incident returned to the plane and was quickly confronted. Hey, bud. You do that to me, and ill knock you flat. Hey, you stay out of this reporter crew members tried to intervene as the verbal fight escalated. You dont know what the story is. I dont care what the story is. You almost hurt a baby. Reporter this flight fallout comes less than two weeks after footage of a man being dragged off a United Airlines plane sparked outrage. This is wrong oh, my god reporter American Airlines apologized for fridays incident, saying in a statement, what we see on this video does not reflect our values or how we care for our customers. American airlines also suspended the Flight Attendant involved while the incident is under investigation. Reena, that passenger and her family chose to take another flight, and they were upgraded to first class. Ninan okay, carter evans. Thank you. The murder of a Police Officer in paris this week by a suspected isis militant may influence voters as they head to the polls this weekend. Farright nationalist Marine Le Pen is among the frontrunners heading into the general election. Elizabeth palmer is in paris. Reporter love her or hate her, Marine Le Pen is a real contender. Like donald trump, she talks about patriotism, about cracking down on immigration and bringing back bluecollar jobs. But theres a big difference le pens main base is among the young. Sylvain hechon is 25, an activist in the town of maubeuge, a National Front stronghold. Hes in charge of the ground game, stuffing leaflets in mailboxes the oldfashioned way but also posting Campaign News on facebook. We visited him the day before the paris shooting when he, like millions of young french people, were preoccupied with frances economic woes. He showed us one of le pens videos aimed squarely at millennials, who face an Unemployment Rate stuck at nearly 25 . Why are young people attracted to the National Front . Young people believe that immigrants are stealing our jobs, he tells me. Marine le pen will limit immigration, even if she has to use the military. Pictures like these of waves of migrants coming ashore on european beaches resonate powerfully here in the north of france where the landscape is dotted with shuttered factories, and all thats left of the coal mines that once employed thousands are old slag heaps covered with grass. In the market town of valencienne, Venus Beaudechon is out spreading le pens antifreetrade message. President trump put his people first, she says, and we believe Marine Le Pen will do that, too. Defend the french. Passiotely, both in her and her agenda, but overall, she remains a controversial figure. And with only hours to go before voting starts, this race, reena, is still too close to call. Ninan well be following it all tomorrow as well. Elizabeth palmer in paris, thank you. Coming up, an urgent earth day warning. Scientists say were on thin ice. Is like me, and youre talking to your rheumatologist about a medication. This is humira. This is humira helping to relieve my pain. And protect my joints from further damage. Humira has been clinically studied for over 18 years. Humira works by targeting and helping to. Block a specific source. Of inflammation that contributes to ra symptoms. Its proven to help relieve pain and. Stop further joint damage in many adults. Humira can lower your ability to fight infections, including tuberculosis. Serious, sometimes fatal infections and cancers, including lymphoma, have happened, as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. Before treatment, get tested for tb. Tell your doctor if youve been to areas. Where certain fungal infections are common and if youve had tb, hepatitis b, are prone to infections, or have flulike symptoms or sores. Dont start humira if you have an infection. Talk to your doctor and visit humira. Com this is humira at work. It shouldnt be whateverfleas and ticks. Home. No, no no no no. Seresto® kills and repels fleas and ticks for 8 continuous months for effective protection in an easytouse, nongreasy collar. 8month seresto®. From bayer. On your big day the only tears you. Not allergies. From joy. Flonase allergy relief helps block 6 key inflammatory substances that cause nasal congestion and itchy, watery eyes. Its an allergy nasal spray that works beyond the nose. Flonase. Bburning of diabetic nerve pain these feet. Kicked off my high school games. And helped those in need. But i couldnt bear my diabetic nerve pain any longer. So i talked to my doctor and he prescribed lyrica. Lyrica may cause serious allergic reactions or suicidal thoughts or actions. Tell your doctor right away if you have these, new or worsening depression, or unusual changes in mood or behavior. Or swelling, trouble breathing, rash, hives, blisters, muscle pain with fever, tired feeling or blurry vision. Common side effects are dizziness, sleepiness, weight gain and swelling of hands, legs, and feet. Dont drink alcohol while taking lyrica. Dont drive or use machinery until you know how lyrica affects you. Those who have had a drug or alcohol problem may be more likely to misuse lyrica. Now i have less diabetic nerve pain. Ask your doctor about lyrica. Ninan on this earth day, scientists in alaska are sounding the alarm about rapidly melting polar ice. Barry petersen has our report. Reporter with temperatures soaring this last winter to 50 degrees above normal, the area around the north pole is melting, and the Arctic Sea Ice is shrinking at a rate never seen before. Were not talking about something thats 100 years from now. Were talking about something thats going to happen in the next decade. Reporter Jeremy Mathis is direor of Arctic Research for noaa, the National Oceanic and atmospheric administration. The arctic is warming twice as fast as other parts of the planet. Reporter we met mathis at utqiagvik, alaska, once called barrow, the farthest Northern City in the United States, where noaa has a lonely outpost monitoring the Arctic Sea Ice. Here on the polar ice, its not what you see but whats hidden below. The ice is thinning. It used to be nine feet thick in some areas. Now its more like three. Why do i care about whats happening out there . We care about the arctic because it has connections to the entire northern hemisphere, to people down in the lower 48 states. Reporter the Warming Arctic is causing the jet stream to wobble across america, helping spawn massive weather events, and the number of billiondollar events in 2017 is on track to set a record. Oh, man reporter and as americas weather becomes more destructive, early warnings become more critical. But scientists may lose their vital tools, like climate monitoring satellites, targeted by the Trump Administration. Mick mulvaney is the administrations budget director. As to Climate Change, i think the president was fairly straightforward. Were not spending money on that anymore. We consider that to be a waste of your money. Were going to be less aware of whats coming down the road. Reporter john walsh is chief scientist at the international Arctic Research center at the university of alaska in fairbanks. Were basically ignoring threats to the wellbeing of future generations. Reporter in alaska, warmer temperatures are melting the permafrost. Villages are literally disappearing. And Scientists Say alaska today is fair warning of the Climate Change future for the rest of america. Barry petersen, cbs news, utqiagvik, alaska. Ninan and still ahead, the other side of the Climate Change debate from a man who calls himself a climate realist. I have spent years taking overthecounter products for my belly pain and constipation. Ive had it up to here its been month after month of fiber. Weeks taking probiotics days and nights of laxatives, only to have my symptoms return. vo if youve had enough, tell your doctor what youve tried and how long youve been at it. Linzess works differently from laxatives. Linzess treats adults with ibs with constipation or chronic constipation. It can help relieve your belly pain, and lets you have more frequent and complete bowel movements that are easier to pass. Do not give linzess to children le than six, and it should not be given to children six less than8. It may harm them. Dont take linzess if you have a bowel blockage. Get immediate help if you develop unusual or severe stomach pain, especially with bloody or black stools. The most common side effect is diarrhea, sometimes severe. If its severe, stop taking linzess and call your doctor right away. Other side effects include gas, stomacharea pain, and swelling. Talk to your doctor about managing your symptoms proactively with linzess. Looking for clear answers for your Retirement Plan . Start here. Or here. Even here. And definitely here. At fidelity, were available 24 7 to make Retirement Planning simpler. We let you know where you stand, so when it comes to your Retirement Plan, youll always be absolutely. Clear. Time to think of your future its your retirement. Know where you stand. Time to think of your future that just tastes better. With 10 times more vitamin e. And twice the omega 3s. Because why have ordinary when you can have the best. Only egglands best. Better taste. Better nutrition. Better eggs. Ninan they climate realists. They reject the idea that manmade Greenhouse Gas emissions threaten the climate, and they think that the u. S. Should stop spending tax dollars on climatechange programs. Heres dean reynolds. Reporter scientists may worry about melting polar ice, rising seas, or strengthening storms, but to joe bast, all of what others call warning signs of Climate Change are just the natural order of things. Is it fair to call you Climate Change deniers . We are climate realists. The efforts to stop Global Warming or slow it down are way disproportional to what the science suggests would be necessary. Reporter from this office park near chicago, bast runs the heartland institute, a conservative think tank waging what he insists is a nonpartisan information war. But if you look at the opinion polls, i think the American Public are on our side. They say, okay, maybe climate is changing. Maybe theres a human impact. We probably cant do anything about it. Its really expensive. We think weve wasted too much money on this already. Reporter besides, he says, Climate Change isnt necessarily a bad thing. Cold weather kills more people than warm weather does. So on net, more people would benefit in a warmer climate. Reporter most climate scientists, the united nations, as well as nasa, dismiss these arguments as propaganda for fossil fuels. But bast, who is not a scientist, can count on a very powerful ally now. So obamas talking about all of this with the Global Warming and the a lot of ihoax. Its a hoax. Reporter bast looks with approvn mr. Trumps decision to roll back regulations limiting Greenhouse Gases and to his appointments of fellow skeptics in the administration. Climate change, he says, is a naturally occurring, cyclical phenomenon caused mostly by the sun, not an approaching disaster accelerated by Carbon Dioxide emissions caused by humans. There is still much to learn about reporter the institute is now sending that message in books and videos to 300,000 Public School teachers and college professors. And despite a tepid reaction to the mailings, bast believes the tide has turned. Are you winning . Were winning big time. 10 years from now, nobodys going to be talking about Global Warming. Its going to be a bad memory. Reporter and not a nightmare. Dean reynolds, cbs news, arlington heights, illinois. Ninan up next, you could call him a mountain hermit, but hes kept one of the worlds most complete records of Climate Change. Change. I even accept i have a higher risk of stroke due to afib, a type of irregular heartbeat not caused by a heart valve problem. But whatever trail i take, i go for my best. So if theres Something Better than warfarin, ill go for that too. Eliquis. Eliquis reduced the risk of stroke better than warfarin, plus had less major bleeding than warfarin. Eliquis had both. Dont stop taking eliquis unless your doctor tells you to, as stopping increases your risk of having a stroke. Eliquis can cause serious and in rare cases fatal bleeding. Dont take eliquis if you have an artificial heart valve or abnormal bleeding. Whiltaking eliquis, you may bruise more easily. And it may take longer than usual for any bleeding to stop. Seek immediate medical care for sudden signs of bleeding, like unusual bruising. Eliquis may increase your bleeding risk if you take certain medicines. Tell your doctor about all planned medical or dental procedures. Im still going for my best. And for eliquis. Ask your doctor about eliquis. For my constipation, i switch laxatives. Ed stimulant laxatives make your body go by forcefully stimulating the nerves in your colon. Miralax is different. It works with the water in your body to hydrate and soften. Unblocking your system naturally. Miralax. Get your ancestrydna kit. Spit. Mail it in. Learn about you and the people and places that led to you. Go explore your roots. Take a walk through the past. Meet new relatives. And see how a place and its people are all a part of you. Ancestrydna. Save 20 through wednesday at ancestrydna. Com this earth day high in the colorado rockies, where a man named billy barr started taking notes on the nature around him nearly 45 years ago. John blackstone paid him a visit. Reporter a springtime visit to billy barrs place is no simple journey. But its all worth it when you discover this remote cabin deep in the woods its like a snow cave here is home to one of the worlds most valuable and unexpected troves of scientific data. I came out in late may, 1972. It was such a mental relief to have peace and quiet in my life. Reporter you came for the solitude, but you started to get a little bored. A bit of boredom, but a lot of it was just making my own activity. Reporter so you would go out and measure the snow. Twice a day. I would first get a ruler and stick it in the snow and measure how much new snow there was. Reporter it wasnt just the snow depth and when it melted. Using a handoperated system he built himself. And what this does is it converts the weight of this can and the snow in it into the equivalence of water. Reporter he also calculated how much groundwater that snow would produce when it melted. You have been doing that same thing since 1974 in this place . Twice a day. Reporter when that wasnt enough to keep billy busy, he started tracking wildlife. Precipitation, birds, mammals. Reporter . And recorded it all by hand in a series of nowtattered notebooks. Those notebooks are historic now. Reporter in the early 90s, scientist david inouye from the neighboring Rocky Mountain biological laboratory needed data for his research on wild flowers. He had heard about billys notebooks but was shocked when he saw how comprehensive they were. I said, billy, you know, those data are really relevant to how the climate is changing and how animals are responding to t changing climat reporter when you started taking your measurements, did you have any idea that they would have any kind of longterm significance . No, none at all. Remember, this was mid70s, early, mid70s. If you asked me about Climate Change, i would have said, yeah, it got warm. I took my sweater off. I mean, it meant nothing to me. Reporter but now it means everything to the global scientific community, which has published his numbers in dozens of scientific papers. Like most climate scientists, billy is concerned by what his numbers show temperatures are rising and snow is melting earlier each year. Its worrisome, obviously. Its not a good trend. Will we lose water storage . Will drought increase . Will floods and famine increase . Reporter but billy leaves the answers to Big Questions like those to others. Hes content to do his part and head out into the wilderness, where theres an infinite amount of data waiting to be collected. John blackstone, cbs news, gothic, colorado. Ninan and thats the cbs weekend news for this saturday. Later on cbs 48 hours. Im reena ninan in new york. Thank you for joining us. Good night. This is kpix5 news. New at 6 00, a massive show of support for science as a crowd of 30,000 spills into the streets of San Francisco. Free speech owdosh at cal and culture vowing to showup on campus next we matter what. We have learned that mia is making a comeback as well. You do that to me and [ commotion ] chaos in the aisles at sfo tonight. This Flight Attendant has been grounded. Im Elizabeth Cook in for julia. This plane was about to set up for dallas last night when this happened. [ indiscernible ] [ crying ] reporter the facebook video shows this mother is distraught over the way a male Flight Attendant grabbed her baby stroller normally left on the jet wing. Witnesses say she was hit with the stroller and it came close to hitting her young child. Then one man on the dallas bound flight confronted the Flight Attendant. Bud, you do that to me and ill knock you flat. Hey you stay out of this [ commotion ] American Airlines issued a statement soon after the incident last night. We are deeply sorry for the pain we have caused this passenger and her family. The actions of our team member captioned here do not seem to show empathy, a quality nessary for customer care. In a statement, we nknow all of the facts related to a