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Tag: smog
Despite more people and more cars, California's smog is in retreat
2013-06-05 22:30:00| Climate Ark Climate Change & Global Warming Newsfeed
LA Times: Despite a three-fold increase in people and cars in the last 50 years, California's strict vehicle emissions standards have managed to significantly clear the state's air, according to new research. The study also found that Southern California's air chemistry has changed for the better. The amount of organic nitrates in the atmosphere -- which cause smog's eye-stinging irritation -- has drastically fallen off, according to federal researchers. Ozone and other pollutants have been monitored...
Utah video contest zooms in on clearing the smog
2013-05-18 01:25:27| Waste Management - Topix.net
When Emily Kam learned about the chance to do something good for the environment for her new hometown, she jumped on it.
United Kingdom: Ground-level ozone causes spring smog
2013-05-12 22:44:00| Climate Ark Climate Change & Global Warming Newsfeed
Guardian: During the 1950s when London was enveloped in pea-souper smogs, Los Angeles was struggling with a quite different air pollution problem. The London smogs were caused by coal smoke becoming trapped in the city in cold still conditions, whereas Los Angeles smogs were caused by traffic pollutants reacting in strong sunshine to produce ozone at ground-level. Ozone is very reactive and these smogs were first characterised because of their damage to rubber and crops before human health effects were fully...
Tags: united
kingdom
united kingdom
spring
Trees and Smog
2013-04-29 15:35:00| Climate Ark Climate Change & Global Warming Newsfeed
Environmental News Network: Trees breathe in CO2 and exhale Oxygen A natural way to refresh the air or so it seems. Smog is a form of pollution. After years of scientific uncertainty and speculation, researchers at the University of North Carolina at Chapel Hill show exactly how trees help create one of societys predominant environmental and health concerns: air pollution. It has long been known that trees produce and emit isoprene, an abundant molecule in the air known to protect leaves from oxygen damage and temperature...
With addition of smog, trees may generate air pollution
2013-04-26 21:32:00| Climate Ark Climate Change & Global Warming Newsfeed
Mongabay: In 2004 scientists found that isoprene, a compound produced by trees to protect their leaves from oxidation and temperature fluctuations, plays a role in the production of particulate matter, tiny particles that can cause lung damage, asthma, and other health problems. The finding - which led some to argue that forests are worsening air pollution rather than helping mitigate it - was incomplete however. Researchers didn't fully understand how isoprene and air pollution was linked. A new study...
Tags: addition
air
generate
trees
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