VERVENA, South Africa — A fading roadside ad for Selala Funeral Service here captures what was, until recently, the essence of South Africa’s AIDS epidemic: “Tombstones Are Available,” it reads.

Jin Peisheng, a drilling rig foreman, knows the challenges of trying to extract natural gas from a coal seam under the cornfields here in north-central China.

SAN FRANCISCO — The threats from climate change are many: extreme weather, shrinking snowpack, altered ecosystems and rising and more acidic seas, to name a few.

A new vaccine in its first human trials may offer protection against the chikungunya virus, a mosquito-borne infection that causes fever and severe joint pain, researchers reported Thursday in The

NORTH SALT LAKE, Utah — A landslide struck an upscale suburban Salt Lake City community on Tuesday, destroying a home and forcing evacuations as a rain-soaked hillside tumbled from above.

The Rev. Lennox Yearwood punched his fist in the air as he rhythmically boomed into the microphone: “This is a moment for great leadership. This is a moment for our country to stand up.

Although Antarctic fur seal populations are declining because of climate change, their genetic diversity is increasing.

The United Nations expressed concern about the possible spread of polio in the war-ravaged countries of Syria and Iraq and beyond on Tuesday despite the biggest vaccination campaign undertaken in t

CORTLANDT, N.Y.

After a last-minute deal that cut the money requested in half, a key state board on Wednesday approved a $256 million loan from federal clean-water funds to the New York State Thruway Authority to