Long before the continents spread across the globe, Earth held one connected landmass known as Pangaea. This supercontinent formed hundreds of millions of years ago and helps explain why distant ...

The movement of the tectonic plates influences the movement of Earth's continents. The Earth we see today, about 336 million ...

Plate tectonics is the theory that Earth's outer layer is made up of plates, which have moved throughout Earth's history. The theory explains the how and why behind mountains, volcanoes, and ...

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Add Yahoo as a preferred source to see more of our stories on Google. An illustration of Earth 200 million years ago as Pangaea, the last supercontinent, began to break apart. The continents we live ...

About 150 million years ago, a massive tectonic mega-plate stretched across the Earth, spanning roughly a quarter of the size of the Pacific Ocean. Its jagged contours ran all the way through the ...