The morning after the eviction, teams of cleaning crews with power washers moved in to execute a "deep clean" of the site, which gained a reputation for a foul smell during its four months of operation.

WSJ: Occupy Movement's Version of the Odd Couple Unfolds in London

"Taking this major step toward cleaning up the Capitol Power Plant's emissions would be an important demonstration of Congress' willingness to deal with the enormous challenges of global warming, energy independence and our inefficient use of finite fossil fuels, " they wrote.

CNN: Washington protesters push 'clean energy,' protest coal use

Big shipping firms now support an official push for higher-quality fuels. (A new report suggests cleaning up marine fuels could save many lives.) Power plants are adding scrubbers.

ECONOMIST: An encouraging appointment addresses an enduring problem

Algae also offer the potential of aiding in the curbing of CO2 emissions from power stations and cement factories, and in cleaning nitrates and phosphates from agricultural runoff water and effluent from sewage plants, while simultaneously furnishing useful fuels such as biodiesel and ethanol according to how the algae are processed.

FORBES: 'Artificial Cells' May Provide Souce Of Algal Fuel

That eased their way to power and they entered office with the economy in the process of cleaning itself out.

FORBES: Economic Recovery: How Did Successful Presidents Do It?

Jason Lewis was 26, broke and cleaning windows when he and a college friend decided to embark on an adventure around the world using only human power, one of the last great firsts to conquer.

BBC: Jason Lewis: Circumnavigating the world