Green news roundup: Flood defences, nuclear and vulnerable trees

Environment news • Ministers 'misled MPs over need for nuclear power stations' • Flood defences hit by government cuts 'mismatch', say MPs • Burying electricity power lines 'cheaper than National Grid claims' • Grass roots green projects 'are way to low-carbon UK' • London slow to become the 'electric car capital of Europe' • China's largest freshwater lake dries up On the blogs • Can the UK achieve its carbon targets without nuclear power? • China quietly shelves new diesel emission standards • Flood defences are being overwhelmed by a whirlpool of spin • Pop vicar Richard Coles preaches the virtues of cycling • Leaked data: Palm biodiesel as dirty as fuel from tar sands Multimedia • In pictures : Week in wildlife • The world's biggest and most vulnerable trees – in pictures • New species discovered in Suriname - in pictures • Does God care about climate change - video Observer Ethical Awards 2012 • Lucy Siegle introduces the 2012 awards • Nominate or enter here • Be a citizen scientist and stop the spread of invasive species in Britain Best of the web • EurActiv: Fracking does not need more regulation, report says • BusinessGreen: Why David Cameron should attend the Rio+20 Earth summit • IPS: Puerto Rico divided over energy future For more of the best environment comment and news from around the web, visit the Guardian Environment Network . ...And finally • Tesco drops carbon-label pledge The supermarket blamed the amount of work involved and other retailers for failing to follow its lead