Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...

In honor of Earth Day, here are 25 facts about the history of our celebration of Mother Earth, as well as facts about the environment that may serve as a wake-up call for action.

KIRUNA, Sweden (AP) — High atop the Luossavaara Mountain in northern Sweden, Sami reindeer herder Lars-Marcus Kuhmunen mapped ...

The ocean basins are so vast and deep that they hold about 97 percent of the Earth's water. Sea water that's trapped in ...

He shared key facts about the asteroid with CBS News during the below conversation, which has been edited for clarity. When would the asteroid hit Earth? This asteroid passes us by every four years.

Life as we know it — plants, animals, fungi, even you and me — depends on something that happened more than 2 billion years ago. It was a cellular revolution called eukaryogenesis, the origin of ...

Since at least 2016, a rumor has circulated online that "a speck of dust is halfway between the size of" an atom and Earth. However, Wendy Taylor, a particle physicist and professor of physics and ...

The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run-in with a comet ...