The Baird's sparrow, a favorite of U.S. birdwatchers, is being pushed out of North Dakota and Montana and into Canada by climate change.

For the first time this century, the Colorado River reaches the Gulf of California.

Rising temperatures and hybridization with non-native rainbow trout threaten Montana's famed cutthroat trout with extinction.

One-fifth of world electric energy production now comes from renewables.

The EPA proposes a rule to cut carbon dioxide emissions from the power sector, including existing coal-fired power plants, by 30 percent by 2030. 

Finland aims to cut its greenhouse gas emissions by 80 percent by the Middle of the century. 

Ohio freezes its energy-efficiency and renewable energy standards for two years.

California has an early and severe fire season. On average, fire season in the West is now three months longer than it was in the 1970s. 

Pope Francis says that destroying the earth is a sin. 

May 2014 is the hottest May on record. 

The West Antarctic Ice Sheet is in irreversible collapse, a joint University of California, Irvine-NASA study finds. The ice sheet contains enough water to raise sea levels worldwide by four feet.

A shortage of limes, caused in part by severe rains in Michoacan, Mexico, wreaks havoc on restaurants and bars that serve margaritas and guacamole.

Tesla Motors surpasses Toyota to become the largest auto industry employer in California.

To help speed widespread adoption of electric cars, Tesla CEO Elon Musk opens his company's patents to other automakers for free.

America has more solar workers than coal miners.

The U.S. Energy Information Administration scales back its estimate of the amount of technically recoverable oil from California's Monterey Shale by 96 percent.

Satao, the world's largest-tusked elephant, is killed by poachers in Kenya. 

Chile cancels environmental permits for a series of five giant dams on two of Patagonia's wildest rivers.

Jupiter's red spot is getting smaller. No one knows why.