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4 great talks for International Women's Day


To celebrate March 8, International Women’s Day, we suggest these four TEDTalks gems from some amazing speakers — artists, scientists and economists who think deeply about the role of women. Author and activist Isabel Allende discusses women, creativity, feminism — and the power of passionate thinkers and doers: The former Finance Minister of Nigeria, Ngozi []

Life on Mars? Let’s look in caves: Penelope Boston on TED.com


So the Mars Rovers didn’t scoop up any alien lifeforms … ? Scientist Penelope Boston thinks there’s a good chance — a 25 to 50 percent chance, in fact — that life might exist on Mars, deep inside the planet’s caves. She details how we should look and why. (Recorded February 2006 in Monterey, California. []