A five-minute explosion from Tungurahua volcano shot hot gas and rock 6 miles (10 km) into the air on April 4, 2014. More explosions and tremors followed.
Researchers say they've solved the riddle of why zebras have stripes: The stripes act like insect repellant, keeping away blood-sucking flies, say researchers.
For the second time in two days, a powerful earthquake has struck Chile. Today's quake was 7.6 magnitude. It's considered an aftershock of the 8.2-magnitude quake on April 1.
The supervolcano under Yellowstone Park is one of the biggest in the world. When will it erupt again? This NFS scientist doesn't think it'll happen anytime soon.
Around 250 million years ago, 90 percent of Earth's life was wiped out. The cause, new research suggests, wasn't asteroids, or volcanoes, but methane-spewing microbes.
An IPCC report, issued today, says that climate change has already affected agriculture, human health, water supplies, and people’s livelihoods, from the tropics to the poles, from the wealthiest countries to the poorest.
Meteorologists said Hellen was likely to be "one of the most powerful tropical cyclones ever seen over the northern channel [of the southwestern India Ocean] since the satellite era (1967)."