"By agreeing to hear a narrowly focused challenge to one portion of the Obama administration's global-warming regulatory agenda, the Supreme Court on Tuesday cast uncertainty on the scope and timing of President Obama's ambitious efforts to fight climate change—an issue on which, like his signature health care law, he hopes to build his legacy."

"LOS ANGELES -- Two U.S. senators angered by the firing of whistle-blower Walter Tamosaitis from the contaminated Hanford, Wash., nuclear site sharply criticized the U.S. secretary of Energy on Wednesday."

"Two activists and photographer to remain in jail after they, and 27 others, were arrested on ship approaching Arctic oil rig"

"The Supreme Court returns from its summer recess today with a U.S. EPA air pollution case already on its calendar and several other environmental issues potentially on the horizon."

"SALEKHARD, Russia -- Russia announced on Tuesday that it had opened a piracy investigation against the crew of a Greenpeace ship after its activists scaled an offshore oil platform in the Arctic last week. The step signaled that the authorities intended to act decisively to thwart more protests against Russia’s ambitious plans to expand energy exploration in the region."

"At its heart, a major new U.S. EPA report that synthesizes more than 1,000 studies about connections among streams, wetlands, rivers and lakes comes down to what elementary school students are taught about the water cycle. Streams flow into creeks that flow into rivers."

"New regulations to oversee hydraulic fracturing of oil and gas wells in Alaska could be issued later this year by state regulators, officials said at a public hearing on Monday."

"SAN JOSE -- Anticipating a cleanup cost estimated as high as $1.6 billion, local governments from across California made their final legal pitch Monday to hold the paint industry accountable for allegedly threatening children's health by spreading toxic lead paint through tens of thousands of homes."