Human eyes are only one solution among many. This episode explains why animals evolved slit pupils, compound eyes, and ...

One of the most common adaptations seen in the animal kingdom is vision. Nearly 96% of all animals have some kind of eyes and they've proven so evolutionary advantageous that they've evolved multiple ...

Nature's wonders abound, from octopuses with three hearts to horned lizards that shoot blood from their eyes. Vampire bats ...