Earth’s spin is not as steady as it looks from the ground. As ice sheets melt and aquifers are drained, scientists now say the planet’s axis has shifted by more than 30 inches, a subtle but measurable ...

Earth is often described as a circle or an oval, but it is neither. As the planet spins more than 1,000 miles per hour at the equator, it develops a slight bulge around its middle. The result is what ...

Hold onto your sense of balance. Scientists have found fresh proof that Earth doesn't just drift through space — sometimes, it actually tips over. You already know that continents slowly move due to ...