The EU, which says it will meet 20% of its energy needs from renewable sources by 2020, gets set to switch on solar power in the Sahara Desert.
Vertical agriculture takes off: 11 "farmscrapers" that build on the success of living walls and mobile gardens.
A fake oil spill was staged at the Tate in London, as BP protestors railed against the unholy alliance between oil companies and high-profile cultural associations.
School's in: One of the largest school districts in California is going green.
A public insitution goes passive: The world's first passive house museum designed in Sweden.
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