Coal-fired power generation jumped 13% in the U.S. last year, according to a recent report from the federal Energy Information Administration. That helped push carbon emissions from the power sector up about 4% — the first rise after years of declining emissions.

As federal officials negotiate new rules for sharing the Colorado River's shrinking water supply, scientists are expanding efforts to better measure one of the basin's biggest sources of water loss: evaporation.

The U.S. is building more solar farms than ever. But as projects expand, they're also raising questions about where they belong. A new industry analysis suggests one of the biggest concerns — that solar is consuming too much prime farmland — may be overstated, especially in the American West.

Prescribed fires can reduce wildfire risk while also improving wildlife habitat, according to a new study from the Nature Conservancy.

Hummingbirds, Bullock’s Orioles, and sparrows are just some of the many birds building their nests with trash – it’s a growing phenomenon across the world.

Costa Rica is widely known for its nature and conservation, attracting millions of visitors a year.

For the first time on record, solar power generated more electricity than coal in the United States during a full calendar month — a milestone that underscores how quickly the nation's power system is changing.

Climate Change has led to a dramatic shift in Costa Rica's weather patterns

A new study is challenging one of the most persistent arguments against removing aging dams: that nearby communities will suffer economically if the structures come down.

In rural areas of Costa Rica, pineapple plantations are cropping up more frequently. Sometimes they’re right next to homes, raising health concerns about pesticide use.