The Earth is four and a half billion years old, so why they started appearing then is unknown, as is the mechanism to make ...

Add Yahoo as a preferred source to see more of our stories on Google. Happy Earth Day! For the 55th year, the world is using the day to celebrate Mother Nature and the wonderful planet we live on.

A surprising reversal in molten iron flow beneath the Pacific is giving scientists a sharper view of how Earth’s magnetic ...

Add Yahoo as a preferred source to see more of our stories on Google. Earth partially illuminated, displaying continents and clouds, floating in dark space scattered with distant stars. …and sometimes ...

Earth is the only life-supporting planet we know of, so it's tempting to use it as a standard in the search for life elsewhere. But the modern Earth can't serve as a basis for evaluating exoplanets ...

Earth: 4.5 billion years old. It survived five mass extinctions, relies on a paper-thin atmosphere, and somehow produced us. It's an extraordinary place. But most of us know more about what's dropping ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. New research shows that rising sea levels caused by melting ice sheets ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have uncovered a previously unknown doughnut-shaped region ...

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, ...

There's a particular kind of silence that seems to follow astronauts when they try to describe looking back at Earth. They're trained scientists and engineers, people accustomed to precision. Yet ...