Scientific American, February, 2011 (audio)

"How to Fix the Obesity Crisis": A complex global burden, that affects one third of Americans, could be solved by using techniques that have proved effective in treating autism, stuttering and alcoholism.

"Citizen Satellites": A standardized technology for satellites is making space missions more affordable and accessible than they have even been before.

"The Blue Food Revolution": Fish raised in offshore pens could become a more sustainable source of protein for humans than wild fish or beef.

"How Language Shapes Thought": Striking differences in cognitive ability can be explained by the language one speaks.