SCIENCE IN THE NEWS WEEKLY
Power Plants Are Top Source of Greenhouse Gases
According to a report released Wednesday, the most detailed data yet on emissions of heat-trapping gases show that U.S. power plants are responsible for the bulk of the pollution blamed for global warming.
In other environmental news, a new National Research Council report says that reclaimed wastewater can contribute a growing portion of the nation's drinking water supplies and be as safe as conventional sources.
Another report from the National Research Council points out that a draft federal plan to coordinate research into how to respond to climate change is unlikely to succeed without added resources and new ways to manage the program.
Human emissions of carbon dioxide will defer the next ice age, scientists said last week. Researchers used data on the Earth's orbit, among other things, to find the historical warm interglacial period that looks most like the current one. In the journal Nature Geoscience, they write that the next ice age would have begun within 1,500 years--but emissions have been so high that it will not.
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