Green light: Mega turbines, UK mange tout, and mini cows pull their weight

Climate change • UK businesses face steep rise in energy bills • Former Vestas staff open wind turbine manufacturer on Isle of Wight • Engineers race to design world's biggest offshore wind turbines • BP petrol stations have pumps closed by Greenpeace activists • Hackers shut down EU carbon-trading website Wind power had a good week with backing from energy secretary, Chris Huhne , a race for bigger 'mega' turbines and news that former Vestas staff have started their own British wind blade company . Piece by piece • A showcase for local campaigns fighting for Britain's natural habitats • View conservation campaigns across the UK • Piece by piece - tell us about your project Join our new Piece by piece project and help protect Britain's natural world. Wildlife • Romanians split over environmental impact of Danube delta's wild horses • Lionfish boom threatens Atlantic ecosystems • Tata to sue Greenpeace over turtle game • Our environment is the natural foundation on which our economy is built Multimedia • In pictures: The week in wildlife • In pictures: BP petrol station protests • Plastiki: crossing the Pacific on a plastic-bottle boat Green living • Green, fun and free: How to dance and make merry without spending a penny • Bike rage is a dish best served cold • Jon Snow should set an example on his bike by not running red lights • British mange tout goes on sale for the first time Best of the web • Conservation Magazine: Sparks fly over study suggesting wildfires cut CO2 • SolveClimate: EPA slows approval for Canada-Texas oil pipeline • Green Futures Caroline Lucas says now is the time to invest in a green economy • ChinaDialogue: China's search for greener values For more of the best environment comment and news from around the web, visit the Guardian Environment Network . ... And finally • Why mini cows could save the planet Farmers in the US are getting excited about miniature cattle that are less than a metre tall – and may be the future of sustainable beef farming