EPA won’t reconsider 2005 ruling on mercury emissions. A decision this week by the U.S. Environmental Protection Agency brought an end to one phase of opponents' efforts to stop a new mercury pollution rule from taking effect. [News Source]

Smog causing untold damage. The proliferation of smog days in Southwestern Ontario may reveal only a fraction of the harm dirty air inflicts on residents. [News Source]

Death in the air. We're learning more and more about how smog damages our health - even when the air seems clean. [News Source]

From Cairo’s trash, a model of recycling. The Recycling School, in a Cairo district noted chiefly for its garbage dump, teaches about 100 poor children their ABCs, fundamental health and the arts -- and basic training in the collection and reuse of trash. [News Source]

Millions breathe cancer-causing air in India: report. Millions in India breathe air loaded with cancer-causing chemicals and toxic gases present at levels that are thousands of times higher than permissible limits, an independent report said on Saturday. [News Source]

City’s skies and water are sullied from outside. Shanghai's air and water quality deteriorated in the first five months of the year, mostly as a result of outside influences. [News Source]

Air pollution goes global. U.S.-based coal-burning power companies have become the target of international lawsuits so Canadians can one day hope to breathe cleaner air. [News Source]

Solar cell system costly, but may pay over time. The photovoltaic solar cell technology has been advancing quickly and it is becoming more efficient and less costly. [News Source]

House to debate refinery incentives, fuels. The U.S. House of Representatives will vote again next week on a bill that would give refiners incentives to expand, House Majority Leader John Boehner said on Friday. [News Source]

Democrats pledge to clean waters, but disagree on how to do it. A key environmental issue that has divided Iowans for decades also splits the Democratic candidates for governor: Should there be local control over where large-scale livestock confinements can locate? [News Source]

Going to extremes to fight global warming. Imagine the world getting so hot that scientists and engineers would design a fleet of 55,000 mirrors, each bigger than Manhattan, and send them into space to deflect sunlight away from Earth. [News Source]