Released in 2023, the Fifth National Climate Assessment (NCA5)'s Art × Climate gallery encourages people to engage with climate in a new way. This work by Jillian Pelto captures mitigation efforts.

While the first day of spring arrives on March 20, many places across the United States see their first signs of the season much sooner. The Spring First Leaf Index, provided by the USA National Phenology Network, tracks when and where the first signs of spring appear.

As the adoption of cleaner-burning engines and electric vehicles drives fossil fuel emissions lower, volatile organic compounds from cooking are playing a significant role in ozone over Los Angeles.

A new virtual reality simulation will use the idea that “seeing is believing” to show people why coastal evacuation orders are so important during storms.

Scientists have deployed a new series of Sofar “Spotter” buoys at four of the seven Mission: Iconic Reefs within the Florida Keys National Marine Sanctuary identified as essential sites for restoration.

To fill in ocean-observation gaps, scientists have increasingly turned to an array of Uncrewed Surface Vehicles, some of which can navigate tens of thousands of kilometers to capture key observations autonomously.

Small businesses are critical in community disaster recovery. They provide essential goods and services and employment, and act as gathering locations during disasters.

Temperatures were above average over much of the globe, particularly in the Arctic, but much below average over western Canada and the central United States.

Winter was warm and dry for the contiguous U.S.; seasonal snowfall was below average across the Northern Plains and Upper Midwest.

La Niña conditions are waning, and a transition to ENSO-neutral is favored in the next month.