Becky Oskin

Volcanoes punched through a remote part of the West Antarctic ice sheet twice in the last 50,000 years.

The most diamond-rich rock ever found was discovered in Russia's Udachnaya diamond mine.

A sex-changing California fish is growing bigger and gobbling up more sea urchins after a decade of protection, a new study finds.

New, more precise dates for India's Deccan Traps eruptions could revive the idea that the massive set of lava flows caused the Cretaceous-Tertiary (K-T) extinction.

Natural temperature swings in the ocean, not global warming, are driving California's extreme drought, according to a new government study.

The 2012-2014 California drought is the worst to parch central and southern California in the past 1,200 years.

Yosemite Falls reappeared in full glory after two days of significant rain in the Sierra Nevada.

Shallow ocean waters everywhere around Antarctica have warmed steadily for the past 40 years.

A new study shows how volcanoes cook up an eruption from the cold mush of crystals in their underground magma chambers.

Scientists have lifted the lid off North America, sharpening their view of the mysterious structures underneath the United States.

The mellow 2014 Atlantic hurricane season ends Sunday (Nov. 30), marking another year without major hurricanes hitting the Eastern United States.

Heralded by fiery lava fountains and plumes of poisonous gas, a new lava lake has appeared atop one of Africa's most active volcanoes.

Tuolumne Meadows's broad plain is an oddball in Yosemite's rugged landscape. Geologists say unusual fractures in the local granite explain the striking contrast.

Arctic storms could bury Buffalo under heaps of snow until Christmas and 2014 will still be the hottest year on Earth since 1880, climate scientists said today.

Small volcanic eruptions account for part of the global warming slowdown since 2000, a new study reports.

The secret fountain of youth is frozen water mantling Antarctica's mighty Gamburtsev Mountains, which have kept their youthful appearance after 34 million years buried under ice.

A striking new video from NASA reveals how the greenhouse gas carbon dioxide spreads across Earth in a single year.

The demand for global trade is driving a huge growth in cargo shipping in the world's oceans, with nearly four times as many ships at sea than in 1992.

Even though deadly spider bites are regular fodder for scare stories, spider experts say it's actually quite rare for anyone to suffer serious injuries from the world's deadliest spiders.

Pavlof volcano, one of Alaska's most active volcanoes, erupted for the second time this year on Saturday (Nov. 15).

Expect a 50 percent increase in lightning strikes within the United States by 2100 if temperatures continue to rise due to greenhouse gas emissions.

Italian scientists convicted of manslaughter in connection with the 2009 L'Aquila earthquake won their appeal on Monday (Nov. 10).