Biomedical engineer David Camarillo reveals how much scientists still don’t know about concussion and the brain.

A group of Brazilian hackers affiliated with Anonymous plans to join the escalating protests leading up to the World Cup this week. As they criticize government spending and inequality, they also shine light on the power of online protests.

What will sports look like in the future? | ideas.ted.com

How will science and technology change athletics, the limits of the human body and the shape of competition? Writer David Epstein, NFL pro Chris Kluwe and ESPN’s Cynthia Bir tackle these questions and more.