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Does glyphosate, the active ingredient in the widely used weedkiller Roundup, cause non-Hodgkin lymphoma? This question is at issue now in a lawsuit in San Francisco Superior Court. Hundreds more claims...

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The Trump administration on Aug. 2 formally announced a proposal to freeze fuel economy standards and tailpipe emission standards for new cars. In addition, it is proposing to revoke California’s authority...

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Editor’s note: More than 1.2 million acres are currently burning across much of the West, Alaska and Florida. In California, the Carr Fire in Shasta County has scorched more than 100,000 acres, and...

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Hopes for fewer large wildfires in 2018, after last year’s disastrous fire season, are rapidly disappearing across the West. Six deaths have been reported in Northern California’s Carr Fire, including...

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Experts widely agree that human activities are harming the global environment. Since the Industrial Revolution, the world economy has grown dramatically. Overall this is a success story, since rising...

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Americans have now purchased more than 800,000 electric vehicles, counting both plug-in hybrids and all-electric models. That may sound like a lot of EVs, and it is a big jump from the less than 5,000...

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Just six months after the devastating Thomas Fire – the largest blaze in California’s history – was fully contained, the 2018 fire season is well under way. As of mid-July, large wildfires had already...

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Millions of Americans head outdoors in the summer, whether for a day at a nearby lake or a monthlong road trip. For environmental economists like me, decisions by vacationers and outdoor recreators offer...

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The Amazon and the adjacent Andean slopes in South America host an astonishing richness of plants and animals. These species have been sources of food, shelter and medicine since the arrival of humans...

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“Another glorious day, the air as delicious to the lungs as nectar to the tongue” – John Muir, My First Summer in the Sierra (1911) Most Americans associate U.S. national parks with pristine environments...