Lock eyes with a chimpanzee, and you will notice something is missing. The tissue surrounding their iris, called the sclera, ...

Genetics, right? Sort of. Scientists just learned it’s a bit more nuanced than high school biology.

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. This voice experience is generated by AI. Learn more. This ...

"Hearst Magazines and AOL may earn commission or revenue on some items through these links." Human eyes come in a kaleidoscope of colors—from the palest blues of the sky to the deepest browns of the ...