Policy on vast public lands has favored ranchers. Demographics and economics may alter that equation now.
Heat-tolerant algae could help the world's reefs adapt to climate change, researcher says.
By grazing them in a way that mimics the pattern of wild herbivores, advocates say, rangeland improves.
Effect of natural drought cycle and climate change is restoration of the grasslands of centuries ago.
Home builders want the dead trees, but activists and regulations stand in the way.
Together with earlier moves, 355,000 square miles of islands, reefs, and atolls now have new safeguards.
Agencies can’t agree on a definition, which hobbles preservation efforts.
New Mexico program faces higher hurdles than similar one in Yellowstone.
The Atlanta Botanical Garden is among the public gardens working to ensure the survival of threatened and endangered plants.
Lobbied by concerned students, the state created a critter-friendly underpass.
Invasive species, sinking water levels, and pollution are worrisome trends. But there’s also grandeur to be seen aboard a bulk freighter.
Environmentalists say despite reducing catch quotas, the decision of an international regulatory commission stops short of adequately safeguarding the fragile bluefin population.
Now there’s a move to keep it that way – and perhaps bring North and South Korea closer together.
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.