Green news roundup: Chinese solar, fish discards and badger cull

Environment news • US to impose tariff on Chinese solar panels in victory for domestic makers • Norway leads calls for EU ban on fish discards • Keystone XL pipeline: Obama to oil progress as pump prices rise • Tennessee bill protects teachers who challenge evolution and climate change • Badger cull in Wales scrapped for vaccination programme • India may urge airlines to boycott EU carbon scheme Budget 2012 • Green measures at a glance • Chancellor fires starting gun on dash for gas • Comment: George Osborne's fossil-fuelled fantasy is the road to nowhere • Oil and gas industry gets £3bn tax break to encourage drilling On the blogs • Open Weekend: Does the planet have time to wait for austerity to end? • Caroline Lucas: Ed Davey's dash for gas will not help UK meet carbon targets • Safe cycling campaign pedals to Scottish parliament • Will the 'red tape challenge' really be good for the environment? • From head to footage: the best bike-helmet cameras Multimedia • Algae pushed as next big thing in biofuels - video • Drought and wildlife in Kenya's Masai Mara reserve – in pictures • China builds windfarms in renewable energy boom - video • The week in wildlife – in pictures Best of the web • Solar panels help power revamped King's Cross station • Bill McKibben: Record-breaking dead heat in Illinois for both polls and temperature • Nobel economists urge Barack Obama to back EU aviation carbon plan For more of the best environment comment and news from around the web, visit the Guardian Environment Network . ...And finally • UK beaches blighted by balloons and discarded bags of dog poo Dog poo wrapped in plastic bags discarded by careless owners has emerged as one of the biggest single threats to the health and safety of beach visitors, a marine conservation charity has warned.