Earth formed over 4.5 billion years ago from a swirling cloud ... Keep reading to learn more about Earth's different layers, its atmosphere, and what makes the "blue planet" unique.

There was the idea that first simmered in the minds and hearts of nature champions around Southern California and beyond ...

The oldest lake in the world dates back about 25 million years and is also the world's deepest and most biologically diverse ...

Earth is moving much faster than it seems ... The Milky Way, too, moves in space relative to other galaxies. In about 4 billion years, the Milky Way will collide with its nearest neighbor ...

The fragmentary facial bones belong to Homo affinis erectus, an esoteric offshoot of our family tree that inhabited Spain more than one million years ago.

Global sea level rose faster than expected in 2024, mostly because of ocean water expanding as it warms, or thermal expansion ...