Eric Niiler

New estimates find billions of gallons needed to support cryptocurrency, fueling concerns about the environmental impact.

When 90-degree seawater engulfed South Florida and the Keys for several weeks this summer, it was too hot for much of the coral reefs to survive. Researchers are trying to stress test the ones who made it for the future.

Areas across the globe experienced heat, wildfires and floods in trends that are expected to continue.

Areas across the globe experienced heat, wildfires and floods in trends that are expected to continue.

Don’t believe the myth that heat pumps—an energy-efficient alternative to oil- and gas-fueled furnaces—work poorly when it’s below freezing outside. Standard heat pumps operate efficiently at outdoor temperatures down to 35 degrees Fahrenheit, but newer cold-weather systems can operate down to 7 degrees—and engineers are pushing heat pumps to go further. This winter, 23 different extreme cold-weather models from eight participating manufacturers are getting trial runs by volunteer households in 10 U.S. states and two Canadian provinces, according to a U.S. Department of Energy official.

Standard heat pumps operate efficiently at outdoor temperatures down to 35 degrees Fahrenheit, but newer systems can operate down to 7 degrees.

化学物質を海に流したり、雲に塩水をかけたり、大気中に反射性粒子をまいたりするなど、科学者は地球を冷やすために以前は考えられなかった手法に頼っている。

Michael Mann, the climatologist behind the influential—and infamous—‘hockey-stick graph,' prevailed in a defamation case and says science is on a roll.

From East Africa to southeastern Australia, large parts of the planet are underwater after unusually heavy rains in unexpected areas.