The Obama administration is developing a more aggressive policy on environmental issues, as the president increasingly sees fighting climate change as one of the core components of his legacy.
Environmental activists and oil drilling opponents have many unanswered questions concerning several aspects of this type of operation.
The department released its environmental impact statement on the project, which would transport 830,000 barrels of oil daily from Alberta's tar sands to refineries of the U.S. Gulf Coast. There are 30 days for public comments.
"It is clear ALEC is working in secret to push state policies in an extreme right direction, but working families are standing up to this agenda."
A Chicago Earth Day rally protested construction of the Keystone XL pipeline and the threat tar sands oil poses to freshwater, air and climate. It was one of scores of actions held across the country.
Cleanup crews rushed to clean up the mess the following day, and are continuing to skim oily water off the river.
A community environmental organization will participate directly in investigating the disastrous Aug. 6 fire at Richmnd, Calif.'s Chevron refinery.
Richmond's residents live amidst five refineries, three chemical plants and eight superfund sites, in a county that produces the most hazardous materials.
In what seems to be part of a steadily increasing effort to find, Los Angeles will become the largest city to ban plastic bags at grocery stores.
A federal judge ruled in March that the Environmental Protection Agency illegally vetoed a large West Virginia coal-mining project.