A large explosion happened on May 18 at Hawaii's Kilauea Volcano, and, at that time, the 1st serious injury was reported. USGS warned of the release of toxic gases in a plume called a laze, which happens when molten lava hits sea water. Images and videos here.

Report on CFC-11 - an illegal chemical responsible for ozone-depletion in Earth's atmosphere - now apparently on an upswing again. Meanwhile, new direct evidence the ban on CFCs is working and the ozone hole is recovering.

A squall line of severe thunderstorms swept over New York City and the surrounding area last Tuesday, creating dramatic skies.

They were working with spacecraft data, using a new technique to analyze it. They found a new type of magnetic event in the realm just beyond the boundary of Earth's magnetic field.

There's a false notion that female birdsong is rare in comparison to male birdsong. But lady birds sing, too. You can participate in a new project that aims to collect more recordings of female birds.

Unseasonably, in recent days, the temperature at the North Pole has soared to the melting point of ice. That's about 30-35 degrees F (17-19 C) above normal.

Volcano scientists issued a second Orange Alert on Wednesday. "At this time, we cannot say with certainty that explosive activity will occur, how large the explosions could be, or how long such explosive activity could continue."

When mountains explode … lava flows and fountains … getting ready for the next eruption.

Kilauea is one of the world’s most active volcanoes. Here are images and video from its ongoing eruption in Hawaii.

New research suggests that as great land plates began to shift and move on Earth's surface, our world became what geologists call a Snowball Earth.