The US Army's plans to expand operations at 17 facilities in 12 states over the next six years to accommodate up to about 75,000 troops and support personnel will have major environmental impacts.

When considering the impact of transportation on the environment, most people think of cars. However, air travel is gaining increasing scrutiny as a climate change culprit.

Big banks take greenhouse gas emissions into account when assessing risks of financing power plants

In 2005, at least 3,600 facilities violated their water discharge permits more than 24,000 times, according to a US Public Interest Research Group report released Oct. 11, 2007.

"Citizen scientist" program to document when local plants flower, bud, leaf.

The Department of Energy's Energy Information Administration is expected to release its annual report on greenhouse gas emissions in the last week or two of November 2007.

"Net metering" for selling excess wind or solar energy to utilities shows great variability among states.

The final installment of the Intergovernmental Panel on Climate Change's "Fourth Assessment Report on Climate Change" is expected to be released Nov. 16, 2007, during a Nov. 12-17 gathering in Valencia, Spain.

Drought is a major local story for many news media. Weather extremes, including drought, are an integral part of the climate change dilemma.

After years of wrangling, and little significant action, federal legislative efforts addressing greenhouse gases and climate change are beginning to crystallize.