Air quality improving in many U.S. cities: report

(HealthDay) -- Air quality in America's most polluted cities has improved significantly over the past decade, according to a new report from the American Lung Association.

Dirty snow causes early runoff in Cascades, Rockies

Soot from pollution causes winter snowpacks to warm, shrink and warm some more. This continuous cycle sends snowmelt streaming down mountains as much as a month early, a new study finds. How pollution affects a mountain range's ...

Meet Kimberly Casey: Studying how debris influences glaciers

Kimberly Casey is a glaciologist who spends a fair amount of time in the office analyzing satellite data. But when she talks about her fieldwork on remote glaciers, one suspects she could do pretty well in a triathlon, too. ...

Want to feed the world? Tackle pollution from ozone and soot

Researchers have long known that man-made climate change will harm yields of important crops, possibly causing problems for the world's food security. But new research shows air pollution doesn't just harm crops indirectly ...

Soot forensics: Carbon fingerprints reveal curved nanostructure

Researchers have moved one step closer to reducing air pollution from engines by imaging soot nanoparticles to reveal their unique signatures. The nanoparticle structures are like fingerprints, revealing curved fullerene-like ...

Hybrid tugboat cuts emissions, study shows

A new study by University of California, Riverside scientists of what is believed to be the world's only hybrid electric tugboat found that the vessel is effective in reducing emissions at the Ports of Los Angeles and Long ...

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