greenhouse gases

The three main greenhouse gases hit record high levels in the atmosphere last year, the U.N. weather agency said Wednesday, calling it an ominous sign.

The U.S. plans to reduce greenhouse gas emissions dramatically in the next decade. Scientists say it's crucial that the U.S. succeed. Still, many of the positive effects won't arrive for decades.

With surgical care on the rise globally, researchers worry the energy-consuming procedures will have a negative impact on the climate. But they say there are ways to make them more energy efficient.

A new study shows that when ads made hedonistic marketing claims, such as "exotic" or "delicious," rather than targeting environmental interests, more people were willing to try eating insects.

U.S. production of heat-trapping greenhouse gases fell 2.7 percent last year. But larger cuts will be needed to address climate change.

Greenhouse gas concentrations reached a record high. Global sea level was the highest on record, too. NOAA's State of the Climate report points to the urgency of addressing climate change.

President Trump says he will pull the U.S. out of the 2015 Paris pact. Here's a by-the-numbers look at the details of that historic global agreement.

Researchers say 30 percent to 50 percent of the ice loss is due to natural variation in temperature and humidity, while human-caused warming is responsible for the rest.

In an interview with CNBC, President Trump's EPA administrator said he did not believe carbon dioxide is a major contributor to global warming.