Sustainability

Used car buyers and the U.S. government need to dive into the marketplace to deliver the emissions reductions promised by electric vehicles

The first global declaration on reducing emissions from food production is a start, researchers say—but it sidesteps contentious issues such as meat consumption

Real or artificial? Here’s a climate scientist’s take on what makes a Christmas tree more sustainable, based on how it was made or where it grew

The potential of geothermal energy as a carbon-free power source is well known. Now companies such as Google are helping to unlock it

The COP28 climate summit in Dubai has begun. Here’s how to understand the negotiations and squabbles about money and the “phaseout” versus “phasedown” of fossil fuels

Countries need to double their energy-efficiency gains to achieve the emissions reductions required to meet the goals of the 2015 Paris climate agreement, a new report finds

Virgin Atlantic flew the first large commercial jet to traverse the Atlantic with 100 percent sustainable aviation fuel

Heat pumps are ubiquitous in the form of air conditioners. Scientists just invented one that avoids harmful refrigerant gases

Artificial intelligence models are getting bigger, along with the data sets used to train them. But scaling down could solve some big AI problems

The new U.S. National Climate Assessment details how climate change will alter nearly every aspect of American life—and how the U.S. can help avoid “potentially catastrophic outcomes”

Eating less beef, cheese and ice cream would slash emissions, but removing cattle from our agricultural system isn’t easy

Rigorous standards are required to scale hydrogen as a clean energy solution; otherwise, it will be a costly, polluting diversion