250 million years ago, rising greenhouse-gas levels set off catastrophic changes.
Rising levels of carbon dioxide make oceans more acidic, putting shellfish, corals, and more at risk.
Far inland, scientists listen for slow, shallow swimmers.
The justices said restrictions off the coast of southern California jeopardized national security.
Landlocked Steve Lowes raises saltwater corals for the aquarium trade.
Experiment aims to reestablish bivalves staggered by pollution, overharvesting, and disease.
The justices will consider whether the Navy must heed restrictions on use of sonar off California.
A new governmental report lists Brazil’s land reform agency as the biggest culprit for illegal logging of Amazon rain forests.
Far-northern breeding grounds are devastated. A major culprit: expanded farming in US Midwest.
Scientists say the beetles released on Southwest riverbanks could tame the water-sucking tamarisk trees.
New Brunswick man helps save giant mammals when they get snared in fishermen’s nets.
To researchers’ chagrin, measures that might save more of the rare animals have been held up by the White House.
Mining companies stake claims on federal land adjoining the park, while opponents say drinking water will be at risk.
Brian Jones’s rehab center takes in injured and endangered animals.
New York’s Jamaica Bay serves as a microcosm for the world’s wetland woes.
Some 1.8 million acres inside and abutting national parks are at risk of development.
Large land sale throws ecosystem-restoration plans cheerfully upside down.
Elephant-dung pages dispose of a massive waste problem profitably.
To raise cash, some science and environmental groups will let donors name species for a fee.