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The ocean retains heat for much longer than land does. Aliraza Khatri's Photography via Getty Images

How fast can we stop Earth from warming?

If fossil fuel burning stopped, emerging research suggests air temperatures could level off sooner than expected. But that doesn’t mean the damage stops.
Changes in vegetation and temperature affect wildlife and humans, as well as the climate. Lisa Hupp/USFWS

Arctic greening won’t save the climate – here’s why

The growing season on the tundra is starting earlier as the planet warms, but the plants aren’t sequestering more carbon, a new study finds.
Gas station in Seattle on March 11, 2022. AP Photo/Ted S. Warren

Would gas tax breaks make a big difference when prices are skyrocketing? We asked 4 experts

Consumers are feeling pain at the pump and demanding solutions. Some politicians are pushing gasoline tax waivers – but that means less money to fix roads, and often not much economic relief.
Smith & Wesson handguns on display at the Shooting, Hunting and Outdoor Trade Show in Las Vegas, Jan. 19, 2016. AP Photo/John Locher

Fewer Americans are hunting, and that raises hard questions about funding conservation through gun sales

Every gun and bullet sold in the U.S. generates excise taxes to support conservation. But Americans are buying guns now for different reasons than in the past – and increasingly, not for hunting.