All articles
biology
Why are there six kinds of corn?
Sweet corn, popcorn, flint, flour, dent and waxy are all one species — and the differences between them come down to what happens inside a single kernel as it dries.
Aug 2, 2026
biology
How does a falling cat land on its feet?
In 1894 a chronophotographer filmed a falling cat, and the finest physicists in France accused it of breaking the laws of mechanics. The cat was innocent — and its trick now helps astronauts turn around in space.
Aug 1, 2026
technology
What happens inside a microwave?
No flame, no glowing element — yet cocoa steams in ninety seconds while the mug stays cool. The answer is a radar tube, a spinning molecule, and a wavelength you can measure with marshmallows.
Aug 1, 2026
astronomy
Why does the Moon always show us the same face?
Every human who has ever looked up has seen the same lunar face — same seas, same craters. The reason is a slow gravitational brake, and it is quietly rearranging Earth's own days.
Aug 1, 2026
chemistry
Why does popcorn pop?
A kernel of popcorn is a sealed pressure cooker with a spring-loaded leg. The full story involves ten atmospheres of steam, a 6,700-year-old snack, and a somersault filmed at 2,900 frames per second.
Aug 1, 2026
physics
Why is the sky blue?
The air above you is invisible — and yet the whole dome of it glows blue. The reason involves a law of fourth powers, a brass tube in a London basement, and a sunset you can build in a drinking glass.
Aug 1, 2026