Arne Duncan is President Obama's secretary of education, and if, while he's on this show, a disaster befalls the president, the vice president, the speaker of the House and every other member of the Cabinet except Veterans Affairs and Homeland Security, he would be president.
We've invited Duncan to play a game called "Now, don't be fresh ... I just take dictation!" Three questions for the secretary of education about the education of secretaries.
My next guest really needs almost no introduction. He's former vice president of the United States. He's one of the most well-known communicators of the risks of climate change. He shared the 2007 Nobel Peace Prize for those efforts. I'm guessing a lot of you have read his book, "An Inconvenient Truth," or you've seen the movie.
Originally published on Mon December 16, 2013 1:43 pm
Gazing up at the night sky is simultaneously humbling and utterly thrilling. This hour, we'll hear from TED speakers who share an infectious sense of wonder and curiosity about our place in the universe and what lies beyond our skies.
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Physicist Brian Greene explains how the prevailing theories about the fabric of space changed dramatically in the last century — twice. The most recent shift in thinking came about from a strange mistake, and revealed hidden truths about the nature of our universe. Later in this episode, Greene talks more about why this discovery hints at the existence of other universes.
What's six miles wide and can end civilization in an instant? An asteroid — and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.