Why do some people do selfless things even at the cost of their own well-being? Here’s the science behind selflessness — and how it’s actually a part of human nature: http://t.ted.com/lkQYtjq | TED

TED believes in the power of memories. Watch TED speaker and Wicked For Good director Jon M. Chu’s personal story, and share your memory at https://memoryproject.ted.com. | TED