Ai Weiwei: 'Life is never guaranteed to be safe'
Ai Weiwei, the Chinese artist who will soon take over Tate Modern's Turbine Hall, on why he wants to tell people that it's OK to speak out.
Other Videos That May Interest You:
Anita Moorjani's Near Death Experience
This is a video interview of Anita Moorjani that recounts her near death experience.
Award-Winning Teen-Age Science in Action
In 2011 three young women swept the top prizes of the first Google Science Fair. At TEDxWomen Lauren Hodge, Shree Bose and Naomi Shah described their extraordinary projects - and their route to a passion for science.
Sean Carroll: Distant Time and the Hint of a Multiverse
At TEDxCaltech, cosmologist Sean Carroll attacks -- in an entertaining and thought-provoking tour through the nature of time and the universe -- a deceptively simple question: Why does time exist at all? The potential answers point to a surprising view of the nature of the universe, and our place in it.
Drew Dudley: Leading with Lollipops
This video discusses how we can have a powerful, even life changing impact on others without ever knowing it.
No Pants Subway Ride 2011
Over 5,000 people took off their pants on subways in 48 cities in 22 countries around the world. In New York, our 10th Annual No Pants Subway Ride had over 3,500 participants, spread out over six meeting points and ten subway lines.