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Scientists with the Nature Conservancy and Forest Service have been raising American elms that are bred to be resistant to Dutch elm disease at two sites in Vermont. Now, they’re injecting them with the fungus to see what happens.

In the first papal address to the Spanish legislature, the American pope said a "moral renewal" was necessary in legislatures and public life to ensure respect for the inherent dignity of all people.

The plants and mulch within five feet of a home pose a major risk for spreading wildfire. California now has the tricky task of convincing homeowners to get rid of the greenery.

As an energy crisis grows, some countries are more prepared because of renewable energy and electric vehicles. Pakistan reduced its reliance on imported natural gas because of the growth of solar.

As emergency responders in Spokane, Wash., take stock of the damage from devastating wildfires, there's a prevailing sense the disaster could have been far worse.

Since the 2010 Dietary Guidelines, more evidence has piled up showing the benefits of drinking water and the risks of sugary beverages. So scientists say it's time for a water symbol on MyPlate.

In order to save the Amazon, it's not enough for deforestation to stop; areas that have been denuded also need recuperation. A Brazilian research scientist has released a report with the World Wildlife Fund that suggested actions to curb the effect of humans on the world's largest rainforest.

Quinoa, once a homebody crop, crossed the Atlantic for the first time this century. Now the Food and Agriculture Organization has a hunch it can thrive in Central and Southwest Asia.

Some Californians had been hoping El Niño would break the state out of a drought. But a government expert says of the prospect of a strong El Niño, "It's a flop."

The German government has intervened in a trade deal between a German arms manufacturer and the Russian military.