Forecasting wildfire smoke is hard. We review the best tools to help you predict when unhealthful levels of smoke are coming.

Often portrayed as lumber-hungry nuisances, North American beavers build dams that help freshwater ecosystems thrive. A new Stanford-led study uses high-resolution aerial imagery to map beaver dams ...

The hazy air hovering over US metropolises, including Chicago and New York, this summer is reminding Americans of just how ...

With wildfires burning in North America, it's important to know if you are enveloped in toxic smoke. The smoke is dangerous because it contains a mixture of hazardous gases and solid particles ...

The pace of the 2025 fires is reminiscent of the record-breaking 2023 wildfire season, which exposed millions of people in ...