News tagged with nitrogen pollution

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Most accurate measurements of big-city pollution

(PhysOrg.com) -- One of NASA's satellites has provided the most detailed map yet of the pollution generated by some of the world’s biggest cities, and given an indication of the volume of emissions of ...

Sep 23, 2011 report
5 / 5 (1) 1 | with audio podcast

Nitrogen in the soil cleans the air

Eutrophication harms the environment in many ways. Unexpectedly, nitrogen fertilizer may also be positive for the environment. And even acidic soils, promoting the destruction of forests, can have a positive ...

Aug 19, 2011
4 / 5 (1) 0 | with audio podcast

Tropical forests are fertilized by air pollution

Scientists braved ticks and a tiger to discover how human activities have perturbed the nitrogen cycle in tropical forests. Studies at two remote Smithsonian Institution Global Earth Observatory sites in Panama ...

Nov 03, 2011
5 / 5 (6) 3 | with audio podcast

"Green walls" against air pollution

(Phys.org)—Planting vegetation along streets in the city might reduce air pollution better than assumed so far, that is by up to 30 percent instead of one to two percent. This finding was made by Dr. Thomas Pugh, now working ...

Sep 04, 2012
5 / 5 (1) 1

Red spruce reviving in New England, but why?

In the 1970s, red spruce was the forest equivalent of a canary in the coal mine, signaling that acid rain was damaging forests and that some species, especially red spruce, were particularly sensitive to ...

Aug 30, 2013
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