One of the most deadly and dangerous volcano hazards isn’t lava. Mudflows called lahars can come without clear warning.

Pag island in northwest Croatia is a region of pale pink limestone that’s as magical as a desert. First, the area’s holm oak forests were felled for medieval ship-building. Intensive grazing and the ...

Scientists suggest female frogs listen for changes in the male calls as a signal for when it's warm enough to mate.

New research suggests injured joints may not be as permanent as once believed, opening fresh strategies to fight osteoarthritis.

Birdwatchers have a rare chance to witness thousands of the towering birds gather in wetlands and fields of the Platte River Valley.