Pop musicians and pop endorsements, Environmental activist Mark Lynas, Is Facebook increasing loneliness? 01/15/2013


Food columnist Mark Bittman on why he's mad at Beyoncé and other pop musicians who endorse soft drinks. Environmental activist Mark Lynas on his about face on the issue of genetically modified foods, and the fallout he met with. Giles Slade, author of "The Big Disconnect," on the loneliness that accompanies our passion for technology.

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