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 ...

Have you ever wondered why some people have lighter eyes than others? Differences in iris coloration have traditionally been explained as a result of sexual selection, but a recent study led by ...

🛍️ Amazon Prime Day: The best deals chosen by our editors 🛍️ By Sarah Lindenfeld Hall Published May 31, 2025 8:01 AM EDT Add Popular Science (opens in a new tab) More information Adding us as a ...

Most of us have seen a mood ring in our lifetimes. Depending on your body temperature, the ring would change colors. It seemed like magic back then, but as an adult you may have learned that there are ...