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These artificial sweeteners. i'm sure you get this question all the time, do artificial sweeteners lead to cancer? >> i don't think there's any evidence of that. look, some of these artificial sweeteners have been around since the '60s so it's not just laboratory studies. you have 40-year data to look at. couple of small studies in animals that raised that red flag. animal studies don't always translate to human studies as we found out here. the cancer thing we could probably put to the side but the concern could this change our physiology that makes us crave sugar and not be able to process t...

We're starting to think of cancer on a more literal level, as supposed to be these grows resections of surgery. big leap in cancer. >> steve: apparently a researcher in california was noticing that leukemia cell seemed to generate a lot of the cd 47. essentially it was a do not eat this part of the cancer. so he turned it completely around and that could change everything. >> absolutely. i'm glad -- that's a really in-depth information. they've done it in leukemia. guess what? they took ten mice with bladder cancer, nine out of ten, they were able to cure them from bladder cancer. if this real...

Practical in the real world. >> that makes sense but if you don't have the background knowledge and you just know what you'd do by experiencing these firsthand that means you don't know how to fix your mistakes because he did and get the basic technical knowledge at school. >> my challenge is is the best way to sit in the classroom paying exorbitant amounts of money or could we get back more efficiently? john: next person. >> ideas graduated from school in indiana but is the engineering degree in human studies just as valid? it is not the same thing where does that misconception come from? to ...

. a new way to quit smoking is on the horizon. a vaccine that combines the nicotine in the bloodstream is in trial. it prevents nicotine addiction in mice. researchers stress that human studies are needed but still far away. with the news that former congressman anthony weiner may be thinking about running for political office again, hometown paper "the new york post" is posing a provocative theory this morning that flip side of the 15 minutes of fame is that the time-out for shame doesn't last even that long. meaning he could come back in spite of this picture among others. in the day of ...

Encouraging news for smokers looking to kick the habit. researchers at cornell university say they have developed a new vaccine aimed at preventing nicotine addiction. they say it's worked on mice and human studies could start after two more years of animal testing. the study's lead investigator says the vaccine works by helping to produce antibodies which he likens to pacman because they gobble up nicotine gobble. this one is said to require only one dose. updating our top story tonight. president obama down playing the political significance of today's supreme court healthcare ruling. he say...