A peacock feather in sunlight shifts from blue to green to bronze as you turn it. Photograph it, and this shimmer collapses ...

Cat-like eyes show up in searches everywhere. If the internet is this obsessed with eye color, how rare are green eyes in humans? They're uncommon enough that seeing them still feels like spotting a ...

The process of compositing, or placing actors in front of a background that’s not actually there, is as old as filmmaking itself — and it’s always been a pain. Netflix has a new technique that relies ...

For most of human history, green eyes didn’t exist. Understanding why they do now means rethinking what we know about evolution itself.