From the rice paddies of South Asia to the wheat fields of northern China, summer monsoon rains sustain the livelihoods of billions. Yet these vital rains fluctuate dramatically from decade to decade—a variability that has long puzzled climate scientists.

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

Guatemala's Volcano of Fire is erupting, prompting authorities to evacuate nearly 300 families and warn that an additional 30,000 people in the area could be at risk. The eruption of "Volcan de Fuego" began overnight, with no immediate reports of casualties.

A volcano on Russia's far eastern Kamchatka Peninsula erupted overnight into Sunday for the first time in at least 400 years. The Krasheninnikov volcano sent ash more than 3.7 miles into the sky, according to staff at the Kronotsky Reserve, where the ...

The Hayli Gubbi volcano in the rural northeast of Ethiopia erupted November 23. Afar Communication Bureau via Facebook A volcano in northern Ethiopia erupted Sunday, marking its first known eruption in 12,000 years. The volcano, called Hayli Gubbi, spewed ...