could it have been the mmr vaccine that caused that autism?" that's a perfectly reasonable question. >> narrator: the fact that two events happen close together might mean they are causally related, but it could also be simple coincidence. >> this vaccination is given at an age where often the first symptoms of autism emerge. and typically it... it occurs around 15 or 18 month of age, when these children start to walk and also when we expect them to develop language, which they usually fail to do. >> there are a certain set of diseases that become apparent when children reach a certain age. that's not cause and effect. >> just because one event followed another, it doesn't mean it was caused by the other. i mean, every morning the rooster crows, the sun comes up. it doesn't mean the rooster's causing the sun to come up. the question is, was it caused by it? >> autism is the canary in the coal mine. i believe that it's telling people that this vaccine program is imbalanced. it's a good thing that's gone too far. >> isn't the problem here, jenny,

medical community, including myself believes there is no causal connection between the vaccinations and mmrrticular and development of autism. >> i'm sure we'll talk about this for a long time to come as more studies are done and we learn more about autism. >> thanks, barbara, i appreciate it. >>> our time right now, 11:51. a man texting has a run-in with a bear. we'll show you what happened. >>> and first lady michelle obama gives contests on the our hit show, the biggest loser, a workout at the white house. >>> plus >>> here's another reason why it's not safe to text and walk. you might run into a 400-pound bear. that's what happened to this guy in glendale, california. a news helicopter was filming when the man was so busy texting he almost walked right into the animal. he wasn't hurt, though. the bear is nicknamed meatball, he's been on the loose for months now. wildlife officials did capture the bear, he wasn't hurt. he was released into the wild. >>> first lady, michelle obama, is showing she's more than talk when it comes to her health initiative. mrs. obama sweated alongside the con

[cheers and applause] mmr fall, i has to give student loan payments faster so 1.6 million students who make payments on time only have to pay 10% of their monthly income towards loans once they graduate, which means if you decide to become a teacher or social worker or guidance counselor, something that doesn't pay a lot of money coming you can still afford to do it because they'll never have to pay more than 10% of your income in order to stay current on your loans. [cheers and applause] then we decided come you know i come you guys need more information about this whole process. we want students to have access to a simple fact sheet on student loans and financial ways you can have all the information you need to make your choices about how to pay for college. so we set up this new consumer finance protection bureau to look out for consumers. [cheers and applause] said they are not putting out a fact sheet called note before -- "know before you owe" something we could've used when we were in your shoes. and then what we said is it's not enough just to increase student aid. we've also

they knew that as hard as it is to get attention to mmr, if you're not famous, i think they knew thatenacious person. and they also found the story compelling. so thank you, public affairs. >> just a short conversation with georgetown professor sheryll cashin about her second book, "the agitator's daughter: a memoir of four generations of one extraordinary african-american family." by the way, booktv covered professor cashin earlier on this book, and it's about an hour in length. you can go to booktv.org. just go up in the search function in the upper left hand corner and type in her name and you can watch the entire hour. thanks for being with