California and Oregon are among the U.S. hotspots for dangerous submicron (PM1) air pollution—those with particles less than a micron, or a millionth of a meter wide—according to new research.

Being a bicycle courier comes with its share of workplace hazards, including potholes, angry cab drivers and trucks with large blind spots. But one of the most insidious threats is the air the ...

Google is joining a big initiative to track methane emissions from space. Google is joining a big initiative to track methane emissions from space. is a senior science reporter covering energy and the ...

Light pollution, defined as the improper use and overexposure to artificial light at night, has emerged as a significant global environmental issue with far-reaching consequences. Research shows that ...

If you live in or near a crowded city and have tried to see the stars or a meteor shower in the night sky, you probably had little luck. The reason is light pollution. Light pollution is when urban ...