Earth - Environment news

Forest and savanna can switch quickly

(PhysOrg.com) -- Two recent studies have found that environmental changes can bring previously stable forests and grasslands to tipping points that produce sudden large-scale and sometimes irreversible changes ...

Oct 14, 2011 4.4 / 5 (8) 1 | with audio podcast report

World phosphorous use crosses critical threshold

(PhysOrg.com) -- Recalculating the global use of phosphorous, a fertilizer linchpin of modern agriculture, a team of researchers warns that the world's stocks may soon be in short supply and that overuse in the industrialized ...

Feb 14, 2011 4.4 / 5 (24) 38 | with audio podcast

City lights make air pollution worse

(PhysOrg.com) -- A new study by scientists in Los Angeles, California has found that bright city lights makes air pollution worse because the glare of the lights interferes with chemical reactions that clean ...

Dec 16, 2010 4.7 / 5 (15) 1 | with audio podcast report

Common cactus could be used to clean water

(PhysOrg.com) -- Access to clean drinking water is lacking in many parts of the world but most technologies to clean water to make it fit for drinking are expensive and hard to maintain. Now researchers propose ...

Apr 30, 2010 4.4 / 5 (14) 8 | with audio podcast report