Did science just solve the mystery of human evolution?? Join us... to find out!

The human brain is packed with 100 billion neurons. It's responsible for everything we do, think and feel. It dictates our emotions, intelligence and overall mental health. But, what if our brains were 50% smaller? If the brain halved in size, would humans be half as effective at living their lives? Or, would we actually be more efficient than ever?

The human race is constantly evolving, striving to survive on Earth for as long as it can. But some biological developments are stranger, weirder and more unexpected than others. Whether we're resisting disease or drinking milk, we're doing it because our bodies have adapted over millennia. In this video, we take a look at some of the most peculiar and unusual patterns, behaviours and physical changes that the human body has recently gone through.