Coastal Cities at Risk

Five years ago this month, Sandy made landfall in New Jersey as it transitioned to a non-tropical storm. The catastrophic flooding that followed resulted in an estimated $50+ billion in damage. On the storm’s fifth anniversary, we analyze the 50 largest U.S. populations at risk from coastal flooding from Atlantic basin storms.

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Here’s How Wildfire Pollution Harms Health

Large wildfires are becoming more frequent and widespread in the western U.S. Smoke from these fires is undermining decades of progress in reducing air pollution from tailpipes, power plants, and other industrial sources in many areas. Large fires are becoming more common and severe, and the smoke from these fires has serious public health impact

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More Warm Fall Days Across the U.S.

As the calendar turns to October, many people are excited to bring out their cool weather clothes. While parts of the western U.S. have already cooled enough to see snow, much of the U.S. will continue to be warmer than normal leading into this weekend. Here, we look at how the fall warming trend breaks down to individual warm fall days in cities a

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The First Frost is Coming Later

Coming off of a warm September, warmer falls are becoming a trend across the U.S., with the first freeze (temperature below 32°F) of the season arriving later than before. This trend is not limited to one area of the country. The first freeze is coming a full month (31 days) later in Boise, Idaho, 27 days later in Las Vegas, Nevada, and 24 days lat

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Climate Change and Fall Foliage

With the end of September fast approaching, many people across the U.S. are eagerly watching the trees for their annual display of brilliantly colored fall foliage. A drop in temperatures and a change in the amount of daily sunlight are the standard cues for trees to begin shutting down for winter — changing the colors of their leaves in the

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Climate Indicators

Learn more about the 10 key indicators of a warming climate

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Arctic Sea Ice

Ice has both ecological and economic benefits and its extent could influence weather around the world.

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El Niño

El Niño is a warming of waters in the equatorial Pacific that influences global weather patterns.

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Ocean Acidification

Acidifying oceans can hurt coral reefs and shellfish as well as the people that rely on them for their livelihoods.

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Carbon Dioxide

CO2 is a potent greenhouse gas and plays a vital role in regulating Earth's surface temperature through radiative forcing and the greenhouse effect

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Extreme Heat

Increasing frequency and magnitude of extreme heat can affect health, power usage and more.

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Snow Cover

A shorter snow season increases the amount of sunlight absorbed by the Earth’s surface and can further warm the planet.

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Sea Level Rise

Sea level rise could force millions to leave coastal areas and cost the world trillions of dollars.

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Land Ice

Melting land ice contributes to sea level rise.

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U.S. Wildfires

Wildfires damage forests and release CO2.

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Global Temperature

The global temperature is the clearest measure of how human greenhouse gas emissions are affecting our planet.

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