Sight

Cheap Sunglasses Cause Cancer?
Study says eyes evolved for X-Ray vision "In today's world, humans have more in common visually with tiny mice in a forest than with a large animal in the jungle. We aren't faced with a great deal of small clutter, and the things that do clutter our visual field — cars and skyscrapers — are much wider than the separation between our eyes, so we can't use our X-ray power to see through them," Changizi says.
Eat oily fish weekly to protect eyesight