A Canadian report on the environmental and health risks of the Alberta tar sands has a little something for everybody.

Expansion of the TransCanada pipeline is coming with a few complaints — not what the company wants to hear these days.

Here are some arguments to consider if we plant to get more oil from our neighbors to the North.

A year ago, it seemed that the construction of a 1,700-mile pipeline connecting northern Alberta with the United States was all but a certainty. Now, it feels l

Environmental groups sue State Department about contact that Clinton and a pipeline lobbyist (and former aid) may have had.

Plus: Video hoax targets Alberta's tar sands as the filming location for the wastelands of Mordor.

Five Nebraska lawmakers say there is no rush to approve a massive pipeline that could damage the environment.

Some of the world's most prominent climate activists are headed to D.C. to protest against a proposed pipeline that would bring Alberta's unconventional oil to

Climate activists are about to launch two weeks of protest against a pipeline from Alberta's tar sands to the Gulf Coast. They'd do well to remember there are n

Activists line up for different causes along different U.S. coasts to make sure that politicians know how they feel about methly iodide and a proposed pipeline

Actress one of 100 people detained today while protesting the proposed Keystone XL oil pipeline.

Tribal leaders are among the thousands of protesters who are trying to keep the Obama administration from giving the green light to a new pipeline.

The vice president has strong words about energy policy, but it's the administration's actions that have most in the environmental world concerned.

Daryl Hannah landed in jail Tuesday while protesting a planned oil pipeline that would stretch from Canada to the U.S. Gulf Coast. The actress has been released

Actress partners with Natural Resources Defense Council, asking people to join her in opposing the $7 billion project.

An environmental group obtains emails that it says show "bias and complicity" in a government review of the proposed Keystone XL pipeline.

New rules in Europe could effectively ban oil derived from 'tar sands,' prompting cheers from environmentalists but jeers from some Canadians.

Amid accusations of bias and corruption, the agency's inspector general will investigate its review of the proposed oil-sands pipeline from Canada.

Actor and environmentalist says President stood up to Big Oil by delaying project and calling for more environmental reviews.

With the 1,700-mile oil pipeline now likely on hold until 2013, here's a roundup of reactions from 10 people closely involved in the debate.

It wasn't just Nebraska NIMBYism that sidelined the Keystone XL pipeline. It was an effort to protect one of America's last unspoiled wetland ecosystems.

Pixar Petroleum will manage the oil sands business for Paramount Resources, which has a long history of lifting names from Hollywood.

The State Department has denied the proposed oil pipeline from Canada, heading off a congressionally mandated deadline of Feb. 21.

The Obama administration's move won't necessarily kill the controversial oil pipeline, but it has still drawn strong reactions from both sides of the debate.

According to the GOP's favorite media mouthpiece, the Keystone XL pipeline would have created thousands, no- tens of thousands, no- hundreds of thousands, wait-

Senators tried (again) to sneak a last-minute approval for the controversial Keystone XL pipeline into a new transportation bill. But a record-setting 500,000 s

Actress Daryl Hannah and landowner Eleanor Fairchild were taken into custody after standing in the way of heavy equipment being used to build the southern porti

Climate activist Bill McKibben says now is the time for the Obama administration to stand up to the richest industry on Earth.

The U.N. ambassador is considered a top candidate for secretary of State, but her stock in the firm behind the Keystone XL oil pipeline has raised eyebrows.

David Lillard writes about how his son's questions about the Keystone XL Pipeline led him to learn something new.

From Michigan to Arkansas, a series of recent oil spills have raised doubts about the proposed Keystone XL oil pipeline.

Washington Post energy correspondent Steven Mufson traveled the 1,700-mile path of the controversial tar sands pipeline.

Reporters for the online, nonprofit news site spent seven months reporting on tar-sands oil spill in Michigan.

Ads supporting the pipeline are the work of 2 political offshoots of Zuckerberg's social welfare organization.

Amy Smart, Justin Chatwin, Wendie Malick and Ed Begley Jr. for the Environmental Media Association.

U.S. pipelines have already sprung two major leaks in 2015, including the Yellowstone River's second oil spill in four years.

Researchers funded by NOAA record footage of a giant squid in U.S. waters, and the discovery is magnificent.

NOAA scientists capture video of a wreckfish swallowing a shark whole.

Divers enjoy a swim alongside a human-sized jellyfish near Cornwall, England.

But protecting your skin and the reefs is possible.

Deep sea explorers capture video of a rare encounter with a piglet squid, so named because it appears to have a snout.

Despite living in saltwater, manatees like to drink fresh water.

Deep in the ocean is a 'twilight zone' teeming with 1 million undiscovered species, yet fishing there isn't regulated.

New research from a team of U.K. scientists reveals that humpback whales share songs during their migratory travels in the South Pacific.

A rural town creates its own luck when it decides to embrace wind energy.

The Malawian inventor who built a windmill at the age of 14 stopped in last night for a visit with the Daily Show's Jon Stewart.

By good fortune, we happened to share our ferry to the windy, carbon-neutral island of Samso with the Danish prophet of renewable energy, Soren Hermansen, direc

Turbines in Denmark and Sweden throw off blades — a rare event, but one to consider as alternative energy use grows across globe.

Siemens recently broke ground on a wind power nacelle production facility in Hutchinson, Kansas; the facility will bring more than 400 green-collar jobs to the

It's ok to take a longer hot shower when your electricity is coming from the family wind turbine.