A species of red algae in the coral reefs off Japan depends on being tended by the dusky farmerfish, recent research suggests.

See a roundup of the week's news and events: Britain's adventurer swims at the North Pole, heat wave sweeps Europe, fishers hook an ancient fish, and more.

Adélie penguins in Antarctica apparently gave up a 38,000-year-old fish diet to focus on krill, after whale and seal hunting created a surplus of the tiny crustaceans.

A 19-year study in a Chinese nature park revealed that the presence of tourists drove more adult macaques to aggressive behavior against each other and their babies.

A U.S. Army barracks in Oahu has enlisted some unlikely help: Solar power, which is part of a wider energy makeover for keeping military households on track.

The rapid melt of small glaciers and mountain ice caps will play a major role in a 22-inch (56-centimeter) rise in sea levels by 2100, a new study predicts.

A newfound water source could turn deserts green and "change the course of events" in the war-torn African region, a geologist says.

A vicious drought has sent hordes of kangaroos hopping through Australia seeking sustenance—and more often than not, their search ends in cities.

Scours and streamlined features on the seafloor of the English Channel provide the best evidence yet that gushing floodwaters cut Britain off from mainland Europe, scientists say.

The magnitude 6.6 quake killed at least eight people, set off landslides, derailed a train, and sparked a fire at a nuclear plant.

See a roundup of the week's news and events: Indonesia's Mount Gamkonara rumbles, snow falls in Buenos Aires after 89 years, Boeing launches its 787 Dreamliner, and more.

Fleshy corals are vanishing as bleaching events intensify, experts warn, noting that entire species could go extinct before they are even discovered.

Cyclical changes in the sun's energy output are not responsible for recent global warming, a new study asserts—placing the blame mostly on people.

Understanding the source of gases that cause some volcanoes to pop like a bottle of champagne could help protect tourists and others from the unpredictable and explosive blasts.

At least one affected region reports killing 90 tons of rats in an effort to curb a rodent invasion, linked to recent flooding, that is ravishing crops and threatening public health.