Green light: Serengeti threat, Yemen water crisis, how Moses parted the sea

Climate change • Chris Huhne fights Treasury to save his climate department • Coalition drops further green pledges on timber and renewables • Greenpeace activists tie themselves to anchor of Shetland oil-drilling ship • 'Chemical nonsense': Leading scientists refute Lord Monckton's attack on climate science • Are the climate change deniers with no evidence just naturally gullible? Wildlife • Serengeti wildebeest spectacle under threat from development • UK's oldest known arctic tern returns to roost • Britain's oldest birds • Wild tigers filmed in Bhutan mountains • Welsh assembly unveils revised badger cull plans Multimedia • Video: Chinese alligators on the brink • Audio slideshow: Water crisis in Yemen • In pictures: The last Bajau sea nomads • In pictures: Wildebeest migration spectacle under threat from planned road Green living • Can an old Russian woman cycling around England highlight habitat loss? • Help me make my longer cycle commute more fun • Leading the campaign for a simple London cycle map Best of the web • The Ecologist: UK farmers face dilemma over 8,100-cow 'super-dairy' • Earth Island Journal: Interview with Sea Shepherd's Paul Watson • Yale Environment 360: The battle to save Russia's Pavlovsk seed bank For more of the best environment comment and news from around the web, visit the Guardian Environment Network . ...And finally • A miracle! Science claims it has figured out how sea was parted for Israelites It was a miracle of the ages, the parting of the Red Sea for the Israelites. Now modern science is claiming a feat that if true is almost as miraculous – figuring out how Moses may have done it and where.