All the world's existing continents have a combined surface area of about 57 million square miles (148 million square kilometers). The Pacific Ocean …
7 Hot Facts About the Pacific Ring of Fire
It's home to 75 percent of all the world's volcanic activity and 90 percent of the planet's earthquakes. So what makes this area so active? Learn about the San Andreas fault and more as we dive into the facts about the Pacific Ring of Fire.

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After a 6.4 magnitude quake hit Southern California on the morning of July 4, 2019, near the city of Ridgecrest, about 100 miles (161 kilometers) to …
When the explorer Ferdinand Magellan visited Earth's biggest ocean in 1520, he found the waters pleasantly calm. And that's why — to this day — most …
It's a geological feature so massive, so vast and so imposing that it makes Mount Everest look like a mole hill by comparison. Unlike Everest, …
It was one heck of a merger. Around 300 million years ago, nearly all the world's landmasses clumped together, forming a supercontinent called …