Weekly environmental news, June 30 - July 6

The false hope of biofuels [WP]
Judge stops U.S. Navy using sonar [National Geographic]
Climate change evaporates from G8 agenda [Reuters]
Low water in Great Lakes causes worry [Reuters]
Hong Kong considering island wind farm [AFP]
Ability to control weather in question [Reuters]
Growing acidity of oceans may kill corals [WP]