An effort to understand Earth’s past climates uncovered a history of wild temperature shifts and offered a warning on the ...

A new study co-led by the Smithsonian and the University of Arizona offers the most detailed glimpse yet of how Earth's ...

A timeline of 485 million years of Earth’s surface temperatures shows ancient greenhouse conditions were hotter than scientists thought.

A weird number of craters are located close to the equator, and the odds that this is random are incredibly low, researchers ...

A new study from Monash University scientists suggests that Earth may have had a ring system that formed around 466 million ...

At times during the past half-billion years, carbon dioxide warmed our planet more than previously thought, according to a ...

Coelacanths are deep-sea fish that live off the coasts of southern Africa and Indonesia and can reach up to two meters in ...

It's the first time Earth's geologic record — information found inside rocks — has been used to create an animation of this kind.

A new study offers the most detailed glimpse yet into how Earth's surface temperature has changed over the past 485 million years. The data show that Earth has been and can be warmer than today -- but ...

At that time, what is now Ireland was submerged under a shallow tropical sea. The marine environment was home to a wide ...

High in the Canadian wilderness, Smithsonian scientists search for ancient minerals that could explain the origins of the ...

"It has the landscape; it looks like the Moon. And it has the scale of features astronauts will both be observing and exploring," NASA's Cindy Evans said.