At some point—whether it happens at 29, 35, or 42—you look in the mirror and notice something has shifted. Skin that once bounced back overnight now takes its time. Fine lines become familiar, texture ...

Blue sharks possess a secret hidden in their skin: a sophisticated arrangement of microscopic crystals and pigments that create their brilliant blue appearance — and may allow them to change color.

Jack is a gaming features and news writer from the United Kingdom. He has been writing and publishing his own fictional stories and game-related blog posts since he was 14, but he's been playing games ...

Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. You might not realize this, but quickly changing colors, as ...