An unusually early heat wave smashed records across France, Britain and Spain. Temperatures in some areas are starting to soar again.

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The birds are particularly vulnerable to high temperatures, and France’s torrid June took a heavy toll.

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Bill Frist, a surgeon who also served as Senate majority leader, has emerged as an outspoken advocate for environmental health. “A healthier planet means healthier people,” he said.

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The lawsuit aims to hold fossil fuel companies responsible for a heat wave in Portland five years ago. The industry says the case should be thrown out.

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A scientific analysis concluded that such high temperatures, across so much of the continent, would “not have been possible” without global warming.

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The extreme heat smothering Europe has upended Climate Week in London.

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The burning of fossil fuels is raising temperatures worldwide, but local factors, on land and at sea, determine which regions warm most rapidly.

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Many philanthropists are backing away from climate giving. But one is writing very big checks.

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Many philanthropists are backing away from climate giving. But one is writing very big checks.

The database of federal global warming research recreates a website that was closed amid the administration’s broad retreat from climate science.

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The database of federal global warming research recreates a website that was closed amid the administration’s broad retreat from climate science.

Records are being broken for the second time in a month, leading scientists to probe the upper limits of what the warming climate can dish out.

The federal government wants to help utilities buy large components for up to 10 large nuclear reactors. It’s unclear which, if any, companies might participate.

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The federal government wants to help utilities buy large components for up to 10 large nuclear reactors. It’s unclear which, if any, companies might participate.

Searing temperatures in Western Europe are drawing comparisons to 2003, when a deadly heat wave sparked a reckoning.

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Searing temperatures in Western Europe are drawing comparisons to 2003, when a deadly heat wave sparked a reckoning.

A pair of proposals from the Trump administration would lower costs and weaken requirements for fossil fuel companies that drill on federal property.

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MAJURO, Marshall Islands—Perched on the bow of an aluminum landing craft, Anne Cohen gazed a few yards ahead of the vessel toward a yellow robot gliding across the emerald Majuro lagoon.

The unmanned surface vehicle, called Yellowfin, was quickly becoming one of the coral researcher’s most dependable guides in these Central Pacific waters.

“She’s the best dive buddy,” said Cohen, a tenured scientist at the Woods Hole Oceanographic Institution in Cape Cod. Programmed to navigate to a precise set of coordinates, the robot cut through small swells like a tiny sailboat without a mast, directing Cohen toward a destination she had traveled thousands of miles to revisit.

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As a new, potentially record-breaking El Niño begins, researchers are vigorously debating whether climate change is driving the phenomenon’s intensity.

© Ulet Ifansasti/Getty Images

As a new, potentially record-breaking El Niño begins, researchers are vigorously debating whether climate change is driving the phenomenon’s intensity.