Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the universe, others right here on Earth." ...

As civilizations become more and more advanced, their power needs also increase. It's likely that an advanced civilization ...

Scientists discovered that volcanic eruptions in India’s Deccan Traps 66 million years ago released gases that altered Earth’s climate.

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.