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ScienceOctober 9, 2026

Metal and wood at the same temperature feel different because metal cools your skin's surface far more. Here's the physics, with real numbers.

HealthOctober 9, 2026

The photic sneeze reflex is a sneeze set off by sudden bright light. Here's what studies have found about the eyes, brain and genes behind it.

ScienceOctober 4, 2026

A banana does emit radiation from potassium-40, but the dose is tiny next to a day of natural background, and your body regulates the potassium.

TechOctober 4, 2026

Capacitive touch senses a finger by how it changes an electric field under the glass, which is why gloves, water and styluses behave the way they do.

HealthOctober 1, 2026

The muscle that raises your hair is a leftover from our furrier ancestors, and a 2020 study found it also tells your hair follicles when to grow.

NatureSeptember 29, 2026

The wingtips trace a figure eight because the wing has to make lift on both the downstroke and the upstroke. Here's how that works and why it hums.

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