If you've heard that eating less beef is a good way to cut greenhouse gas emissions, join us in this segment to hear why one cow emissions expert says "Not so much." The numbers in the papers that reached that conclusion, he says, weren't a good comparison.
We'll also hear about how oil on your skin can affect air quality in the office. And we'll get an update on cold fusion -- is it not such a rogue science anymore? In this hour, we'll go behind the scenes at this week's American Chemical Society meeting.
Produced by Christopher Intagliata, Senior Producer