An estimated 10,000 Keystone XL protesters circled the White House this weekend, as the White House edged towards a decision on the pipeline. The ring of protesters was stacked five people deep.

Green groups are threatening the Obama administration with political repercussions if the pipeline goes forward. If environmentalists withhold their support, it could have a serious effect on Obama’s reelection chances.

In international relations, the Queen of England's birthday takes precedence over dealing with climate change.

In the EPA's pollution program, even plants that are "high priority violators" of the Clean Air Act can end up ignored for more than a decade.

How can green cities programs include low-income communities?

Mongolia is shoveling coal into China's coal factories.