Remnants of Earth's early history have been discovered in a young Cook Islands volcano.
Plate tectonics is relatively new, put forth in the last 30 years or so — its forerunner was the now-discarded continental drift theory. The theory states that Earth's outer shell is made up of huge slabs of rock called plates that glide over the planet's inner layer, or mantle. As these plates shift, they sometimes collide with other plates, making for some interesting, and even deadly, results on Earth's surface, from erupting volcanoes, to earthquakes, to new mountain ranges. Here's a look at Live Science's news and features related to this constantly moving jigsaw puzzle.
Physicists have tentatively detected several particles that could reveal how radioactive heat inside the earth could influence earthquakes
Huge stresses beneath the surface moved plates of the Earth's crust hundreds of feet horizontally and dozens of feet vertically.
Valles Marineris, seen at an angle of 45 degrees to the surface in near-true colour and with four times vertical exaggeration.
If plate tectonics followed the laws of Hollywood physics, Los Angeles would be tearing violently from the mainland as we speak.