By February, once seen as a time of plenty, Nyabolli Chok had run out of food for her three children in their village here in South Sudan. She knew they had to leave.

NAIROBI, Kenya — “This is the spot,” said Morris Njeru, gazing down at a tangled patch of farmland where he recently found the bloody corpses of David, Mukurino and Scratch — his last donkeys.

The number of suspected cases of Ebola has risen to 29 from nine in less than a week in an isolated part of Democratic Republic of Congo, where three people have died from the disease since April 2

Eve Lonnquist’s family has owned a forest in the mountains of northwest Oregon since her grandmother bought the land in 1919. Her 95-year-old father still lives on the 157-acre property.

GENEVA — The World Health Organization says more than nine out of 10 people worldwide live in areas with excessive air pollution, contributing to problems like strokes, heart disease and lung cance

A report examining the many ways climate change threatens coffee and coffee farmers has alarmed people who are now imagining what it would be like getting through the day without their caffeine fix

Exposure to air pollution, a new study finds, may increase glucose intolerance, a precursor of diabetes.

There is a new menace on America’s roads: diesel truck drivers who soup up their engines and remove their emissions controls to “roll coal,” or belch black smoke, at pedestrians, cyclists and unsus

On the floor of a remote island lagoon halfway between Hawaii and Fiji, the giant reef site had been devastated by unusually warm water.

ON THE BORDER OF THE TAMBOPATA RESERVE, Peru — The raid began at dawn.

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