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

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

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 ...

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.