Biologists in central California reported finding the first such egg at Pinnacles National Monument in more than a century.

The countries are the last two major economic powers to agree with the aims of the nonbinding agreement.

Florida’s plan to reclaim the wetlands is instead on track to rescue the fortunes of United States Sugar.

The team behind “The Cove” set up a sting operation at a restaurant that officials say served illegal whale meat.

A national commitment to solar power transformed one community but big subsidies led to unsustainable growth.

Researchers said they found a way to break down lignocellulose, the basic structural material of all plants, to make fuel from crop waste.

EBay, recovering from unprofitable quarters and falling market share, has recast its site to make it more attractive to new kinds of shoppers, like the carbon conscious.

Could this Chinese Year of the Tiger be the last one with actual tigers still afoot in the world’s wild?

While the Tennessee Valley Authority’s cleanup has removed much of the ash the arsenic- and mercury-laced muck or its watery discharge has been moving through three states to at least six sites.

The Interior Department said Friday that the greater sage grouse was facing extinction but would not be designated as an endangered species for now.

But a scientist who led the study said it was too soon to say whether the findings suggest the potential for a dangerous release of methane — a greenhouse gas far more potent than carbon dioxide.

A vast project in Florida will be the world’s second-largest solar plant, attached to the nation’s largest fossil-fuel power plant.

Critics of evolution are gaining ground by linking the issue to climate change, arguing that dissenting views on both should be taught in public schools.

Extreme weather possibly linked to climate change, as well as construction on less stable ground, have provoked unprecedented foundation failures in houses nationwide.

The Vermont Yankee nuclear reactor has many detractors across the state, but in Vernon the plant is seen as a vital part of the town.

More than 10,000 drums of nuclear waste that have been buried in Utah are likely to include some material that is so radioactive state law forbids its burial.

Grudgingly, many climate scientists are beginning to engage critics, admit mistakes and open up their data.