June 30th Gets a Leap Second Because Earth's Rotation is Slowing Down

U.S. Sprawl Peaked in 1994 and Has Been Declining Ever Since

Below Our Feet, a World of Hidden Life

If sea levels rise as feared, some of the world’s island nations may disappear this century. Does that mean they no longer exist as countries, asks Rachel Nuwer.

Seven Different Molten Metals, Poured Into A 15 Gallon Fishtank

Catching One Nazi Became His Life

Meet The Man Who Created The Rainbow Flag

Here Are Three "Simple" Puzzles That Many People Get Wrong Anyway

How breaking a glacier makes the Earth quake

June 30th Gets a Leap Second Because Earth's Rotation is Slowing Down

Is This New Swim Stroke the Fastest Yet?

A Soda Can Explosion At 62,000 FPS