Green news roundup: Water, GM debate and reader photos of bees

Environment news • Most water companies not required to cut leaks before 2015 despite drought • Diageo to end funding of Heartland Institute after climate change outburst • Microsoft to go carbon neutral • Conservative thinktanks step up attacks against Obama's clean energy strategy • Largest onshore windfarm in England and Wales gets go-ahead • Warm water marine species spreading northwards into British waters On the blogs • A chance to move the GM debate on • The price worth paying for New York's bike share • Heartland Institute compares belief in global warming to mass murder • Two-thirds of commuters think UK roads are 'not safe enough for cycling' Multimedia • Bees: your Green shoots photographs • In pictures : Week in wildlife • Birds Strike Back: cartoons lampoon Thames estuary airport plans - in pictures • Satellite eye on Earth: April 2012 - in pictures Features • Anxious Japan prepares for life without nuclear power • Howard Atkinson: GM food saboteurs only destroy vital new knowledge • The water industry is burying a leaking pipes scandal • Wet weather helps ailing wildlife in England and Wales • Jonathon Porritt: The eye-watering expense of nuclear power Best of the web • China mulling investment in UK's new nuclear plans • 'Shameful' plastic waste to be tackled by government For more of the best environment comment and news from around the web, visit the Guardian Environment Network . ...And finally • British asparagus season delayed by bad weather Growers say the prolonged rain and unpredictable weather has delayed the start of the eagerly awaited season