Mass demonstrations welcomed President Obama to the Bay Area today and sent him a clear message on the Keystone XL Pipeline: Just say NO!

The very nature of tar sands -- heavy and abrasive -- points to why tar sands pipelines have an abysmal safety record. But a drastically increased likelihood of spills is only where the problems begin.

David Brower helped transform environmentalism from a polite cause dominated by don't-rock-the-boat upper-class conservationists to an activist movement that uses political action.

San Onofre's reactors have already released radioactive steam and are literally shaking themselves apart. Instead of keeping the reactors shut down, Southern Edison is rushing to restart the reactors and running them as hard as possible.

WASHINGTON -- Because sometimes to get your point across you need to dress up as an Arctic Tern, scores of anti-drilling activists on Tuesday gathered...

WASHINGTON -- Progressive lawmakers Sen. Bernie Sanders (I-Vt.) and Rep. Keith Ellison (D-Minn.) teamed up on Thursday to introduce legislation design...

WASHINGTON -- The contract assigning a third-party company to investigate the environmental impacts of the Keystone XL project adds to questions about...

As the sun had risen in Durban, the Durban Platform was passed at the COP 17. Yet in a replay of Copenhagen two years ago, backroom texts emerged at the 11th hour and the process was thrown into disarray.

Hillary Clinton and the State Department have the final word on whether to approve the Keystone XL tar sands pipeline, unless Obama intervenes. The influence of industry lobbyists connected to Clinton is finally getting some media attention, but there is more to this story.

WASHINGTON -- Environmental groups filed suit against the Obama administration on Wednesday, alleging that U.S. federal officials illegally allowed wo...

WASHINGTON -- Environmentalists on Tuesday called on the Department of Justice to investigate a Canadian oil lobbyist who failed to disclose his statu...

WASHINGTON -- In a boost for grassroots efforts pressuring the Obama administration to block approval of TransCanada's Keystone XL oil pipeline, the h...

You would think that the Obama administration and Congress would want to make sure that the money they spend is spent wisely. That certainly doesn't appear to be the case when it comes to the World Bank Group.

The idea that nuclear energy could be a safe solution to the world's energy needs was never more than an empty dream. Clearly, nuclear is just another nightmare problem.

The oil industry is pushing the Obama administration to approve a permit for TransCanada's Keystone XL pipeline. Exploiting the full potential of Canada's tar sands, according to one scientist, could trigger the uncontrollable over-heating of our planet

We must end corporate polluters' ability to pawn the true costs of their pollution off on the rest of society. The health care, environmental cleanup, and other costs created by pollution ought to be paid by the polluters.

It's refreshing to see the UK step in and re-establish international leadership on climate change. The target to halve our emissions by 2025 is the most ambitious in the world.

The suit follows an extensive effort by the environmental groups to seek information about contacts between Clinton and Paul Elliott, a lobbyist for TransCanada Pipelines and the national deputy director of Clinton's presidential run.

It is indefensible for our federal government to demolish the social safety net while continuing to hand out more than $200 billion in subsidies to environmentally destructive industries.

No science based agency in the US, Europe or elsewhere has found direct links between phthalates and human health. But this doesn't stop some groups from plying on consumer fears.

Nuclear proponents' claims that the industry is clean and safe miss the mark. It takes tons of fossil fuels to mine and transport uranium, leading to about 250,000 tons of CO2 each year.