History where youre better off if you stab somebody. Republicans square off in wisconsin. All eyes will be on rising star marco rubio. A beer with malala who is a practicing muslim and 18 years old. Officials at the university of missouri stepping down over a scandal over institutional racism. Its disgusting that we find ourselves in the place that we do. Officers boarded a plane in miami looking for a man whose caron was suspicious. Heavy snow overnight in reno nevada and across the country. The worlds Antidoping Agency accused russia of running a statesponsored doping program. Its athletes could be banned from the upcoming olympics. Trying to stop an alleged car thief, the driver ran right into him. Scare on the float. A skier drops more than a thousand feet in less than a minute. All that. Here is wakablaka doing his first forecast for you. Rain, rain go away, thats what all the haters say. The Chicago Bears got it done in the fourth quarter. That shot needs no word. And all of that matters. Surprise. Its been four years, if you can believe it. On cbs this morning. I saw some photographs of the inside of ben carsons home. How great is this painting . This looks like something a record producer would paint in rehab. Announcer this mornings eye opener is presented by toyota. Lets go places. Welcome to cbs this morning. Tonights fourth republican president ial debate in milwaukee could be the most important one yet. Donald trump is already taking aim at two rivals who are gaining support. This gop prime time debate will be the smallest so far. Only eight of the 15 candidates will be there, with trump and ben carson right at center stage. Major garrett is on the scene with more. Reporter good morning. This will be one more chance for republicans to occupy the national spotlight. Big bounces in polls will be harder to come by. Carson and trump remain the front runners about marco rubio and ted cruz are gaining momentum. Donald trump zeroed in on ben carson and marco rubio, telling supporters in illinois that both knew nothing about running a business. These are people that have never done it before. And they dont know what theyre doing. Reporter trump, who touts his contempt for political correctionness bashed starbucks for unveiling holidaythemed cups that make no mention of christmas. No more Merry Christmas on starbucks. I have one of the most successful starbucks in trump tower. Maybe we should boycott starbucks. Reporter carson said hes optimistic about tonights debate appear enduring days of inquiries about inaccuracies in parts of his life story. Im hoping ill get a lot of questions about the economy, given who the questioners are going to be. Reporter a new poll conducted before carsons troubles showed the political novice effectively tied with trump and rubio a distant third. Rubio campaigned in wisconsin and like carson blamed the media for inquiries into his admittedly sloppy personal spending as a Florida State legislature. Theres more of an effort particularly from the left and some of the media to distract from the central issues in this campaign. Reporter for the first time Chris Christie and Mike Huckabee have been relegated to the smaller debate earlier in the evening. We let National Polls drive who gets to participate in the debate. If i do a good job tomorrow night, youll be talking about me wednesday morning. Reporter that poll shows trump in second place at 23 . But nearly half said the more they hear about trump, the less they like him. The exact opposite is true of carson, rubio, and cruz. That could prove disicive. Thank you, major. Ben carson insists all the stories he tells about his background are near. Reporters cant confirm the details. Scientists say the way people remember events from long ago explains the difference. Jan crawford has more. Reporter ben carson has been on the defensive about memories from 50 years ago and now is trying to prove that those events are true. I would much rather lose an election than to lie. Reporter last night, ben carson was defiant. But his republican opponents were piling on. This is the only election in history where youre better off if you stabbed somebody. He should answer the questions forthrightly and directly. Reporter the questions focus on key parts of carsons life from his childhood to college. In his autobiography he wrote that as a 14yearold he tried to stab a friend. A cnn report last week found no evidence the incident occurred. But in a 1997 interview with parade magazine carsons mother said that really happened. In a radio interview on monday a former colleague from Johns Hopkins said carson shared the same story with him in 1987. Its a selfdeprecating story. It wasnt a story to aggrandize him. Reporter carson says his opportunities included a scholarship offer to west point. Media reports question whether the military academy even offers scholarships. Carson has pointed to west point recruiting material that mentions scholarships. Most of the scrutiny is focused on how people remember events from 50 years ago, something this neuroscientist says is almost impossible to prove. If we want to evaluate somebodys ability to be a political leader we should focus on their axe as a political leader and less on their childhoods. Reporter last night, buzzfeed backed carsons account of being pranked at yale. Scientists say its an another example of how people dont always remember the same things. Jan, thanks. Cbs news will bring you the democratic debate this weekend moderated by john dickerson. Watch it right here on cbs. One of americas busiest airports is back up and running this morning after a security scare last night after reports of a suspicious item at Miami National airport. Parts of the airport were locked down while authorities investigated. Kris van cleave is live in washington with more. Reporter good morning. Something in one passengers luggage raised a red flag. He was removed from the flight and questioned by authorities. They determined the item was not dangerous and he was let go. But not before hundreds of passengers were exacted. Everybody out from the front. Everybody out. Reporter startled passengers inside this plane at Miami International airport were ordered to place their hands on their heads and evacuate as heavily armed police searched this American Airlines flight. Section of one of the worlds busiest airports were shut down for hours as the fbi investigated the threat. Police officers have been out here, Walking Around here with m16s, assault rifles. Reporter 52video shows a man in a red shirt being led away in handcuffs. But police say he was not arrested and will not face criminal charges. They came in and told everyone to get out, the airport was being evacuated. We came outside and have been sitting here ever since. Reporter but as police swept the airport, 50 flights were delayed. Another nine were diverted. Several people were locked inside this restaurant with the gates closed during the police search. Displaced passengers missed several flights. Long my flights probably delayed. Its see if i even leave tonight. A big headache. Reporter the fbi says the passenger they detained was cooperative during questioning. Kris thank you so much. The university of missouri this morning is looking for a new president and chancellor. Anger over racial tensions on campus forced them out. Both leaders resigned monday. Adriana diaz is on the campus in columbia. Reporter the school is set to lose millions of dollars if the Football Team didnt play this weekend. But student activists want the percentage of black athletes. They say the resignations are an important step in that direction. It was a stunning and emotional victory for students at the university of missouri. Their calls for change were answered monday morning with the sudden resignation of School President tim wolfe. I take full responsibility for the inaction that has occurred. Reporter by Late Afternoon the chancellor of the columbia campus followed suit announcing he would step down and transition into a Research Role by the end of the year. The protests drew the spotlight of the national media. On monday activists faced off with journalists including this exchange with a campus newspaper photographer. The shakeup followed protests over what some called systemic racism on campus. This is our duty to fight for our freedom. Reporter graduate student Johnathan Butler was so outraged outraged, he went on a Hunger Strike last week. Butler still had a message for mizzou. After all the tweets that weve sent telling the administration about our pain it should not have taken this much. And it is disgusting and vile that we find ourselves in the place that we do. Reporter saturday, missouris Football Team with the backing of coaches, vowed not to play again until butler resumed eating. Today theyll return to practice. Was there any fear or hesitation considering whats on the line when you dont play games . No because life is way more valuable than a game. Sometimes extraordinary circumstances require extraordinary measures. Will we solve every problem this way . Absolutely not. Reporter the schools governing board has also announced steps to improve the Racial Climate on campus among them the schools first diversity officer. Students are still demanding a say in choosing the next university president. Adriana, thank you. This morning investigators in egypt are looking at how an explosive device may have been planted on that doomed russian plane. Theyre now scrutinizing employees and luggage. A terrorist bomb is the leading theory for what brought the plane down killing all 224 people on board. Investigators are focusing on the sinai branch of isis. Allen pizzey has more. Reporter good morning. No one is willing to say definitively that the crash was caused by a terrorist bomb and not a mechanical failure. The search for clues is increasingly looking like a crime investigation. The focus is now on airport staff and others who may have had access to the plane. Egyptian Security Officers are reportedly even questioning hotel workers, especially those involved in catering. The russians and egyptians have control of the forensic evidence. But there is enough other evidence to convince u. S. And british officials to go with the bomb theory. Our conclusions have been based on a review of all the Information Available to us. Some of it open source some of it intelligence information. Reporter prompted in part by the hammer blow the plane crash has dealt to the crucial tourist industry, the egyptians smell a conspiracy. One headline egypt will not cave in to pressures. Another read egypt stands up to the wests terrorism. The sinaibased isis affiliate that claimed credit for do you think the plane released this photo montage reportedly showing the aftermath of egyptian air strikes in areas they control to portray the government as the bad guys. In spite of the egyptian governments insistence that it is in complete control of the sinai, isis continues to operate with impunity in a small but vital area of the desert peninsula. Khalichallenge charlie . Thanks, allen. A u. S. Official says that the shooting in jordan does not appear to be terroristrelated. The gunman is identified as aor dane 81 Jordanian Police officer. He was shot death. Christopher few was wounded and his sixyearold son killed in a shooting in louisiana. Reporter for their own safety, both deputy marshals are being held in alexandria. Were longer more this morning about their backgrounds. There are lawsuits pending against both of of them as it pertains to the shooting last week, investigators still cant get a straight answer from those deputy marshals as to why they started shooting. Weve set the bond at 1 million. Reporter deputy marshals Derrick Stafford and norris greenhouse jr. Are charged with murder following a police chase. The 6yearold boy died in the passenger seat as he sat next to his father. State investigators are still trying to figure out why the deputy marshals would open fire on christopher few, who was unarmed. Megan dixon, who claims to be fews fiance said she argued with him the night of the shooting. She said few knew one of the deputies. It was norris greenhouse. He knows chris. He dont like chris. Reporter they were named in a civil lawsuit, claiming they used Excessive Force in a 2013 arrest, along with four other Marksville Police officers. The case is still pending. Latasha murray says she knows the few family and the incident is troubling. Theres a lot of stuff being swept under the table. Its sad that an innocent sixyearold life had to be taken. Reporter Doug Anderson disagrees. Theres no dirty business that happens around here. Reporter on monday Jeremy Mardis was buried in the city he spent most of his short life. This woman was his babysitter when he was ten months old. Ill always miss him. I dont want to fathom going on without seeing him again. Reporter the judge in the case has issued a gag order, unhappy with the fact that information about the case is being released to the public. That means no attorney no witness, no one involved can speak to the public or the media, for that matter. We have learned that Derrick Stafford, one of the deputy marshals in jail this morning, was indicted on two charges of rape back in 2011. But it turned out both of those charges were later dismissed. The more you hear about this story, the more troubling it is. Thank you very much david. Theres more to come for sure. In washington there are calls this morning to overhaul the way federal workers get security clearances. Sundays 60 minutes found the office of Personnel Management overlooked important background check information for edward snowden, who leaked hundreds of thousands of pages of information. In a letter montana senator john tester strongly urged the Homeland Security and Government Affairs committee to hold a hearing to work on improving the security clearance process. Two 14yearolds faced felony this morning in a school sexting incident on new yorks long island over the sharing of an explicit video. The two families are complaining their children were disciplined just for receiving the video. My son opened it didnt forward it to anybody. Immediately erased it from his phone. Kids have been rail roaded kids who are unwilling participants of a video they never askeds for. Police say the avoid showed two teens below the age of consent. It was sent to other high school and Junior High School students. An Oklahoma Police officer had three seconds to take action on a car barrelling toward him. Stop stop ahead, why the driver may have targeted the officer. First, time to check local weather. Weather. Russian athletes could be band from the olympics over the biggest doping scandal in decades. Overhead how clean athletes were robbed by russians accused of cheating. The news is back in the morning on cbs this morning. Aarp and Aarp Foundation are taking on hunger with 31 million meals donated drive to end hunger teams with local agencies to reach the hungriest among us if you dont think ending hunger when you think aarp then you dont know aarp find more surprising possibilities and get to know us at aarp. Org possibilities music the keurig k200® series brewer. One touch, and unlike life, no mess. Your favorites. Your way. Keurig hot. [ male announcer ] sweet sun ripened strawberries. Now weve added even more of them to philadelphia® strawberry. Rich, creamy, and delicious. Only philadelphia®. Theres something out there. Its a highly contagious disease. It can be especially serious even fatal to infants. Unfortunately, many people who spread it may not know they have it. Its called whooping cough. And the cdc recommends everyone, including those around babies, make sure their whooping cough vaccination is up to date. Understand the danger your new grandchild faces. Talk to your doctor or pharmacist about you and your the news is back in the g ion today. I did it. Do it. Take the natures bounty hair, skin and nails challenge. If your hair, skin and nails dont look more beautiful, well give you your money back. I did it. And i feel beautiful. Visit naturesbounty. Com for details. vo new tidy cats lightweight with glade. All the strength and freshness now easy to lift half the weight, smells great. Find the litter that works best for you. Every home, every cat. Theres a tidy cats for that. How do you stay on top of your health . Ahh. Ahh. Ahh. Cigna customers have plan choices and tools to take control. So theyre more engaged, with fewer high health risks and lower medical costs. Take control of your health at cigna dot com slash take control. Ahead, a new look at good tuesday morning. Thyme is 7 26. Heres whats happening a car smashed into a wall into a garage. A young woman who was sleeping there is hurt along with the driver. The witnesses say the driver was speeding. Police continue to investigate. Fastfood workers in hundreds of cities are work walking off the job to are walking off the job to demand a 15 wage. Workers are here are expected to take part. And coming up later a wave of change for seaworld. The Company Plans to phase out the controversial killer whale show. John blackstone has more on that. Well got traffic and weather locally a and locally and its all coming up next. Give yourself at least an hour if you are commuting from the carquinez bridge to the east. Heavy traffic conditions there. We have a couple of accidents cleared out of the lanes but the damage is done. Metering lights are on at the bay bridge. Injury accident reported, westbound 24 slow. As you work towards 580. Clearing and accident southbound 680 at treat. Its over to the right shoulder. Highway 4 westbound also sluggish as well as northbound 880. Good morning, san jose. Home of super bowl 50