More than half of the species in five mammal groups went extinct in Africa about 34 million years ago, scientists recently discovered.
Traces of ancient life were locked inside a 2.5 billion-year-old ruby from Greenland, according to a new study.
After speeding up during 2020, the Earth's spin had settled down. A negative leap second may still be needed in the next decade.
The asteroid that crashed into Earth 66 million years ago unleashed a catastrophic series of events.
If the ice disappeared during the summer, many creatures that rely on it would be driven to extinction, scientists warn.
A new study has revealed that a landlocked mangrove forest in the Yucatán Peninsula migrated there from the coast when sea levels were much higher, around 125,000 years ago.
Satellite images released by NASA's Earth Observatory show concentric rings of clouds forming above the erupting volcano on La Palma in the Canary Islands.
People have long claimed they can hear the northern lights, saying the sounds include eerie whizzing, crackling and buzzing. Is it just an auditory illusion?
Thawing permafrost driven by climate change could free decades-old radioactive material, antibiotic-resistant microbes and unknown viruses that have been frozen for millennia.
An oil spill off the California coast has released around 126,000 gallons of oil that is washing up on beaches and protected wetlands.
The U.S. Fish and Wildlife Service has removed 23 species from the endangered species list because they have most likely gone extinct.
Kilauea volcano on Hawaii's Big Island is erupting, spewing lava and sending Pele's hair into the sky.