Whether it's healing a cut or mending a broken bone, the human body is capable of some pretty amazing repair work, but does it have the power to reverse the blindness caused by genetic diseases? Following along as this...

Vision is arguably the most important of the five senses, but exactly how did we come by this amazing ability?  Find out with this engaging video on the 500 million year evolution of the human eye.

Ever find yourself looking at a clear blue sky and notice something that seems to be floating across your eye? Well, you're not alone. Watch this short video to find out exactly what causes this and other common visual phenomenon.