Facts about jellyfish: creatures older than dinosaurs, a sting that can kill in minutes, and one species that is biologically immortal.

Understand why static electricity spikes at home in winter, what causes that doorknob shock, and how to reduce it day to day.

Understand what actually causes hair loss, when it’s normal and when it’s a warning sign, and how to reduce it based on what science knows.

Facts about the Silk Road: a 1,500-year network that spread paper, gunpowder, and even the Black Death between Asia and Europe.

Facts about owls: a neck that turns nearly 270 degrees, completely silent flight, and hearing precise enough to find prey in total darkness.

Stanford scientists found blood cells reinforcing the brain’s immune system during brain aging, starting in middle age. Here’s what it means.

The neuroscience of grief: how the brain remaps a bond after loss, and why the pain — mental and physical — is real, not weakness.