The official numbers are in: 2024 is the hottest year on record. Climate change is the main culprit. But there might be something else going on, too.

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Exposure to wildfire smoke is a growing health problem across the U.S., as climate change increases the risk and intensity of wildfires.

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Scientists have pointed out that extreme heat is particularly dangerous for older people. A new study shows that young, healthy people are also dying too often in extreme weather.

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Over 12 million cases of dengue fever were reported in 2024, the most ever. A study suggests climate change has likely played a significant role in the disease's expansion.

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In the 2015 Paris Agreement, most countries agreed to try hard to limit global warming to below 1.5 degrees Celsius. Delay and inaction mean that goal is becoming harder to achieve by the day.

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Aedes aegypti are capable of spreading dengue fever— a disease common in the tropics, but still rare in most of the United States. Last year was the first time the disease spread locally in Southern California.'/>

Several people caught dengue fever locally in Los Angeles this fall. Climate change and invasive mosquitoes have made that possible, experts say.

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Researchers found that Hurricane Helene was stronger, rainier, and significantly more likely because of climate change. The U.S. can expect more such storms in the future as warming continues.

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The death toll reported from an average tropical cyclone is 24. But the true toll is maybe 300 times higher—and the losses stretch for years after the storm passes.

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California’s lawsuit alleges that ExxonMobil has known for decades that recycling would not effectively stem the flow of plastic waste.

(Image credit: Mark Humphrey)