Biotech startups are screening embryos for various desirable and undesirable traits before choosing what to implant.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: Eye color comes down to a pigment ...

Prospective parents can now pick embryos based on risk predictions for thousands of diseases and odds for specific traits.

Blue eyes have fascinated people across cultures for centuries, inspiring myths, shaping legends, and appearing time and ...

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...

Lock eyes with a chimpanzee, and you will notice something is missing. The tissue surrounding their iris, called the sclera, is a deep brown or nearly black. You cannot easily tell where they are ...

Color psychology studies human behavior, emotion and decision-making. Certain colors, like blue, may affect your personality.

You may not put much thought into why you love your favorite color, such as pink. You may think your hue preferences "just happened"—but that's not true, says Michelle Lewis, a color psychology expert ...

A bizarre, cyclops-like creature from nearly 600 million years ago may hold the key to how your eyes—and even your sleep ...

Eyespots usually evolve in bright, shallow habitats where they can be seen, especially in species that lack strong physical ...