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Climate: "Smoking Gun" is Laid on the Table-With a Thump

The latest update of scientific consensus on climate change - to be released Friday, Feb. 2, 2007, is said to present "smoking gun" evidence that global warming is happening now and that human emissions of greenhouse gases like carbon dioxide (CO2) are causing it.

Water Security Measures Open to Public Review

Steps necessary to improve security at tens of thousands of US drinking water, wastewater, and stormwater facilities have become a little more definitive with the release Dec. 14, 2006, of a draft set of voluntary guidelines. (

20 U.S. States, Canada and Mexico Have Dead Zones

The Gulf waters off of Louisiana aren't the only US area burdened by a "dead zone." There are similar, smaller areas with short- or long-term oxygen depletion off the shores of 20 states, as well as Canada and Mexico.

EPA Updating Science for SO2

After recently issuing highly controversial updates for two of the main criteria air pollutants — fine particulates and ozone — EPA is in the midst of its review of two others.