So who or what is this El Nino that meteorologists warn may affect our weather in a big way?
The obsessive attention to the state of the latest El Niño comes from the major global impacts it can have.
Climate change gets the Star Wars treatment. Is the force strong with this idea?
The longest continuously-collected satellite dataset in the world turns 42 years old today.
The U.S. scored 13th in global energy efficiency ranking, or near the bottom of the world's 16 largest economies.
Oceans were the hottest they've been on record this June, leading to a month of record heat across the world.
Renewables revolution over the next decade may exist in how power is managed, not in new technology.
A new report -- the latest checkup on the health of the global climate system -- says the planet is running a temperature.
The wildfires searing the Northwest Territories could be a harbinger of things to come in a warming world.
Though renewables have advanced since they were invented, it might surprise how long they've been around.
A new report shows just how costly climate- and weather-related disasters are across the globe.
Groundwater has helped farmers trying to survive the California drought, but losses are still heavy.
The military is already looking at its climate change vulnerabilities but more needs to be done.
Methane emissions from cows and pigs had a surprisingly large impact on climate change.
Fossil fuels are shifting away from national forests and other public lands because of coincidence of geology.
Track Tropical Storm Arthur's progress to see if your Fourth of July weekend is in jeopardy.
Neither New York City nor Boston has recorded a 90-degree temperature yet this summer, surprisingly late.
A Cornell University study says shale gas well defects lead to methane leaks in Pennsylvania.
The Orbiting Carbon Observatory-2 will measure CO2 in Earth's atmosphere and help find sources and sinks.
A storm sitting off Florida's coast is likely to become the first tropical storm of Atlantic hurricane season.