http://www.ted.com Alisa Miller, head of Public Radio International, talks about why — though we want to know more about the world than ever — the US media is actually showing less. Eye-opening stats and graphs.

http://www.ted.com In this fiery and funny talk, New York Times food writer Mark Bittman weighs in on what’s wrong with the way we eat now (too much meat, too few plants; too much fast food, too little home cooking), and why it’s putting the entire planet at risk.

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http://www.ted.com Hacker and writer Joshua Klein is fascinated by crows. (Notice the gleam of intelligence in their little black eyes?) After a long amateur study of corvid behavior, he’s come up with an elegant machine that may form a new bond between animal and human.