The planet is almost 25,000 miles around and 4.54 billion years old, and humans are still discovering some of the amazing ...

Earth Day started in 1970 when people — including Wisconsin Sen. Gaylord Nelson — brought attention to the impact oil spills, pollution and smog were having on the planet. "Then in January 1969, he ...

Earth’s molten iron core unexpectedly reversed direction beneath the Pacific, revealing a dramatic change in the hidden ...

No matter how many times you set it, your watch will always be a little off. That’s because the common belief that our planet makes one full rotation every 24 hours is false. Earth spins on its axis ...

While there is a total solar eclipse over parts of Europe, that “has no unusual impact on Earth’s gravity,” the space agency explained in a statement ...

Earth is about to get a new neighbor in the form of an asteroid. But this one won’t be making an impact. Instead, it’ll be what space enthusiasts have dubbed a mini-moon, and it will stick around to ...

Brightly colored illustration showing Earth cut in half to reveal distinct interior layers. The nature of Earth's interior has long fascinated scientists. Credit: Johan Swanepoel/Science Source ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Earth is about to ...

The study of Earth science isn’t just for students who are interested in how our planet works. It’s also for those who are passionate about addressing urgent global challenges such as climate change, ...

Many Americans view the Earth in religious terms in at least some way. For example, seven-in-ten say the Earth is sacred, including 43% who say this is the case because God created it. Even among ...