Despite decades of progress in reducing air pollution, Los Angeles is still the nation's smoggiest city, according to a ...

Several U.S. cities are experiencing heightened air pollution levels on Wednesday, including parts of Chicago.

Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the ...

A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents ...

Winds are expected to shift Wednesday afternoon and Wednesday night, so smoke and smoky odors will likely drift across ...

The air is cool, the high desert is nearly completely silent, and the Milky Way stretches like glitter across the sky ...

Urban flooding is a major problem in the global south. In west and central Africa, more than 4 million people were affected ...

The Lyrid meteor shower—also known as the April Lyrids—is an annual meteor shower that typically occurs between April 15 and 29.

Discover how innovative urban design can promote health and well-being in high-density cities for a sustainable future.

The northern lights could also be visible Tuesday night in parts of Washington, Idaho, Montana, North Dakota, South Dakota, ...

Every April, the night sky offers one of its most fascinating spectacles: the Lyrid meteor shower. This phenomenon, caused by debris from Comet Thatcher, is visible in much of the ...

Mark International Dark Sky Week 2025 at one of the three internatinoally recognized dark sky places on the island of Ireland.