How much land mass would renewables need to power a nation like the UK? An entire country's worth. In this pragmatic talk, David MacKay tours the basic mathe...

http://www.tedxeuston.com Ngozi Okonjo-Iweala is Nigerian. She is a globally renowned Nigerian economist and currently Finance Minister of Nigeria, a positio...

Massachusetts Senator Elizabeth Warren has introduced the most ambitious anti-corruption legislation since Watergate. Join her fight to close the revolving door between big business and government, end lobbying as we know it, and make this government work for the people.

In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TED...

Detroit Zoological Society Executive Director Ron Kagan will share a view of the future that includes a different relationship between human and non-human an...

The first Syrian refugees has arrived in Azraq in Jordan, a a new refugee camp with the capacity to host up to 130,000 refugees from the war in Syria. NRC ha...

UNESCO Director General Irina Bokova answers crowdsourced questions for the Global Education and Skills Forum, 2014. Don't miss new Big Think videos! Subscri...