What if you could control someone's mind and make them more aggressive or less anxious or extremely hungry? Well, IT'S POSSIBLE! Optogenetics let scientists literally control the brain using light. Using whaa?? Yep, the light actually...

The human brain. It's helping you read this right now (well, unless you're a robot or an animal), and we understand a lot of how it works. But the biggest questions about how the brain works still remains an incredible mystery - from...