Season
Season 1 Episode
Human Body: Pushing the Limits - Season 1 Episode 2 Sight
5.50 47 minutes Sight is the king of the senses. More than 80 percent of what we know of the world comes through our eyes -- without our sight we're lost. In this episode, we reveal the inner workings of our visual system as they've never been seen before, vividly confirming that ancient human adaptations prove no less crucial in modern life.
