11 Jan 2012:
‘Dust Suppressant’ Sprayed
On London Streets to Improve Air Quality
Transportation officials in London have begun using a so-called “dust suppressant” at construction and industrial sites
in an effort to improve air quality in some of the city’s more polluted areas. A biodegradable saline solution, which contains calcium magnesium acetate, is sprayed by trucks onto roadways where it acts like a glue, preventing some particulate matter from drifting into the air where it can be inhaled by humans. According to Transport of London, the municipal transportation agency, the solution will be sprayed in small amounts several times a week
at 15 sites citywide. In early tests, city officials say, it has reduced particulate matter levels by as much as 14 percent. Mayor Boris Johnson said the dust suppressant is just one of many “short and long measures” the city will introduce to improve London’s air quality in 2012. Unless improvements occur, London could face fines for violating European Union limits on particulate matter.
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A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
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An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.