"I am living a few hundred feet above a scar, a surface representing the worst disaster ever inflicted on planet Earth."

My best sprite lightning capture to date, said long-time observer Paul Smith.

A new study suggests our planet got its 1st snowfall about 2.4 billion years ago, after a lot of land rose swiftly from the sea and set off dramatic changes on Earth.

'What we are witnessing is major hydrologic change,' they said. Over 14 years, Earth's wet land areas got wetter. Dry areas got drier. They also reported multiple hot spots resulting from groundwater depletion.

Summer is a great time to frolic in the woods, but look out for poison ivy, oak, and sumac! Top tips for summer itch-prevention.

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.