Add Yahoo as a preferred source to see more of our stories on Google. The slice you see cut out of the Earth reveals its core, depicted here in bright yellow. fhm/E+ via Getty Images Our Earth is ...

The idea of a hollow Earth has fascinated people for centuries. Some have imagined a giant empty world beneath our feet, while others even suggested that entire civilizations could exist inside the ...

A huge region of molten iron deep beneath the Pacific Ocean suddenly changed direction around 2010. The discovery suggests ...

When a Mars-sized meteorite slammed into Earth billions of years ago, the impact completely reset any and all chemical processes on Earth, leaving nothing from before. Or so we thought. Reading time 3 ...

Earthquakes, volcanic eruptions, shifting tectonic plates—these are all signs that our planet is alive. But what is revealed deep inside Earth surprises laymen and scientists alike: Almost 3000 ...

When you think about a large asteroid impact, you might imagine a moment of devastation: a violent collision, a blast of heat and debris, and then years of atmospheric disruption and damage left ...