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How Raindrops Get Their Smell

MIT researchers reveal the mechanism that releases the earthy smell of fresh rain

(Newser) - If you think rain has a distinct scent, you're not imagining it. Petrichor, that earthy smell that accompanies light showers, could be the result of raindrops releasing aerosols, which are tiny amounts of liquid suspended in gas, reports MIT News . "Rain happens every day—it’s raining now,... More »

Global Warming Caused by ... Cleaner Skies: Study

Pollution crackdown has let more sunlight in, making Europe toastier, scientists say

(Newser) - Reducing aerosols and other pollutants has been a major part of Europe’s campaign to reduce global warming, but a new study turns conventional thinking on its head, New Scientist reports. "The decrease in aerosols probably accounts for at least half of the warming over Europe in the last... More »

You'd Better Silence That Spray Paint

SoCal city installs sensors that can hear graffiti artists

(Newser) - If you’re going out to tag in Montebello, Calif., consider using a paintbrush. The Los Angeles neighborhood has spent $1 million on an anti-graffiti system that can hear aerosol cans up to 80 feet away. The 25 “tagger traps” employ sound sensors to catch graffiti artists red-(or blue-... More »

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