If they want to make one big green gesture, though, leaders could most usefully agree to phase out the subsidies they pay for the dirtiest fuels, particularly coal.

ECONOMIST: The Johannesburg summit

Green MSP Robin Harper's amendment, which urged the government to phase out the rearing of smolt or juvenile fish in freshwater open net-pens, fell, with two MSPs voting for it and 114 voting against it.

BBC: Decision time

If the EPA adopts the proposals that such green groups as the Natural Resources Defense Council are lobbying for, utilities that phase out their coal operations early would generate credits they could sell to other operators to keep their coal plants running longer.

WSJ: Review & Outlook: Carbon Power Politics

The tunnel, which is the longest in the second phase of the high-speed rail project, will descend at Davenport Green to the north-east of the airport.

BBC: HS2 to enter Manchester via tunnel under city

In a surprising bit of news, we learned that Germany is set to export more energy than ever despite its nuclear energy phase-out, because of the country's heavy investment in green energy.

ENGADGET: Inhabitat's Week in Green: self-sustaining homes, wooden wind turbines and the world's first solar-powered nation

San Francisco entrepreneur Todd Pelman has founded a small start-up company called Blue Green Pacific, which produces a corkscrew-shaped, roof-mounted turbine that is still in the development phase.

CNN: Stimulus may get small wind turbines spinning