Why do we have eyes?

Why do we have eyes? It might seem like a weird question. Maybe a better question is, why do we see at all, and why do we see colors and shapes? The evolution of our eyes holds the key to this question. Let’s take a step back and look at what “sight” actually is.¬†What we […]

Cats on every continent

Cat species can be found on every continent with a moderate climate. However, cats differ greatly from one continent to another–cougars are found only in North America, while leopards are only in Asia. How did these different strains of cats evolve so differently, yet similarly enough to be definitely recognizable as cats? The answer lies in the geography […]