Panthalassa, a single world ocean surrounding the supercontinent Pangaea, would have stretched at least 1,800 miles (3,000 kilometers) wider than the Pacific.
Scientists detected the most powerful gigantic jet lightning bolt — a lightning bolt that shoots up out of a cloud into the ionosphere — ever.
Earth has experienced five mass extinction events over its 4.5 billion-year history. A sixth mass extinction is underway as a result of human-driven climate change.
An unexploded WWII-era bomb was discovered in Italy's River Po as extreme drought lowers water levels across Europe.
Cavers have successfully navigated Australia's deepest cave and named it the "Delta Variant" after COVID-19.
A massive sinkhole measuring more than 100 feet across has opened on mining land in Chile, according to the government's geology mining service.
There are about 1,350 potentially active volcanoes on Earth. Where are most of these volcanoes located?
Miners in Angola have uncovered the largest pink diamond found in more than 300 years, nicknamed the Lulo Rose.
The Cretaceous period lasted approximately 79 million years, and ended with a major extinction event about 66 million years ago.
Roads and buildings washed away, riverbanks undermined – a new National Park Service video shows the damage from the June 13 Yellowstone flood.
The process is called lithospheric drip, and scientists have only recently begun wrapping their heads around it.
A seashell held to your ear may sound like the ocean, but so does cupping your hand or holding a bowl at the same spot. Here's why.
Here's the science behind petrified wood, including what it is, how long it takes to form and whether it's useful in the research world.
Fires such as those caused by a recent record-breaking heatwave in Europe will likely become more common as the climate warms, scientists say.