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Articles sur California

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The fossil deposits at the La Brea Tar Pits in Los Angeles have well-preserved remains of many prehistoric animals that got stuck in natural asphalt seeps over the past 60,000 years. Cullen Townsend, courtesy of NHMLAC

A changing climate, growing human populations and widespread fires contributed to the last major extinction event − can we prevent another?

New findings from the La Brea Tar Pits in southern California suggest human-caused wildfires in the region, along with a warming climate, led to the loss of most of the area’s large mammals.
Common household products such as cleaning agents can contain a wide range of harmful chemicals. gawriloff/istock via Getty Images

Body lotions, mothballs, cleaning fluids and other widely used products contain known toxic chemicals, study finds

Manufacturers don’t usually have to disclose what’s in products like shampoo and household cleaners, but a new study finds that these products can contain hazardous ingredients.
Fires are increasing in high mountain areas that rarely burned in the past. John McColgan, Bureau of Land Management, Alaska Fire Service

Fire danger in the high mountains is intensifying: That’s bad news for humans, treacherous for the environment

Fires here can affect meltwater timing and water quality, worsen erosion that triggers mudslides, and much more, as two scientists explain.
California’s snowpack was more than twice the average in much of the state in early March 2023. Mario Tama/Getty Images

Is the Western drought finally ending? That depends on where you look

Reservoirs and streams are in good shape in California and the Great Basin, but groundwater and ecosystems are another story. And then there’s the Colorado River Basin.
Prompts like this sign in Coalinga, California, may get people to use less water – but paying them could be more effective. Matt McClain/The Washington Post via Getty Images

A new strategy for western states to adapt to long-term drought: Customized water pricing

Even after January’s storms, California faces a water-scarce future. An economist and an engineer propose a way to test higher water prices as a conservation strategy without hurting low-income users.
The fire risk goes beyond rising temperatures and dry conditions. Samuel Corum / AFP via Getty Images

Western wildfires destroyed 246% more homes and buildings over the past decade – fire scientists explain what’s changing

More homes are burning in wildfires in nearly every Western state. The reason? Humans.

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