http://www.ted.com Susan Blackmore studies memes: ideas that replicate themselves from brain to brain like a virus. She makes a bold new argument: Humanity has spawned a new kind of meme, the teme, which spreads itself via technology — and invents ways to keep itself alive

http://www.ted.com Around the world right now, one billion people are trapped in poor or failing countries. How can we help them? Economist Paul Collier lays out a bold, compassionate plan for closing the gap between rich and poor.

http://www.ted.com Dr. Seyi Oyesola helped develop the “Hospital in a Box” to solve a few of the problems plaguing health care on the African continent — distance between doctors, spotty power, lack of supplies. But solving the health crisis in Africa will take more.

http://www.ted.com Sculptor and engineer Arthur Ganson talks about his work — kinetic art that explores deep philosophical ideas and is gee-whiz fun to look at.

http://www.ted.com Designer Yves Behar digs up his creative roots to discuss some of the iconic objects he’s created (the Leaf lamp, the Jawbone headset). Then he turns to the witty, surprising, elegant objects he’s working on now — including the “$100 laptop.”

http://www.ted.com Ocean explorer Robert Ballard takes us on a mindbending trip to hidden worlds underwater, where he and other researchers are finding unexpected life, resources, even new mountains. He makes a case for serious exploration and mapping. Google Ocean, anyone?

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.