Risk Risk

Data sources: David Ropeik/Harvard University, National Weather Service, World Health Organization, Northeastern University Laboratory for the Modeling of Biological and Socio-Technical Systems, National Geographic, United States Census Adam Cole and Ryan Kellman/NPR hide caption

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Adam Cole and Ryan Kellman/NPR

The cruise ship Carnival Magic floats behind a catamaran off Cozumel, Mexico on Oct. 17. The ship skipped a planned stop there Friday, the cruise line says, after Mexican authorities delayed granting permission to dock. Reuters/Landov hide caption

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Reuters/Landov

I told him he would break his arm if he did that. But he did it anyway. iStockphoto.com hide caption

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iStockphoto.com

Whether or not you'll someday get cancer or any disease can feel like a roll of hundreds of dice. Calculating the odds --€” and knowing what they mean --€” is tricky. Katie Harbath/Flickr hide caption

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Katie Harbath/Flickr

Kids who can't resist temptation early on may have trouble with it throughout their lives. iStockphoto.com hide caption

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iStockphoto.com

BJ Casey on Talk of the Nation

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