As more studies have been completed on the effects of GM crops, the green lobby's case against them has weakened.

ECONOMIST: Another gene genie out of the bottle | The

But doubts about the green credentials of biofuel use, and the knock-on effects on food prices, have caused investors to become disillusioned.

ECONOMIST: Buttonwood: Backing greens with greenbacks | The

But it is equally important to increase public expenditure: to revive demand in flagging economies, to manage the effects of climate change and bring in widespread use of green technologies, and importantly, to provide minimally acceptable standards of living for citizens of the developing world.

BBC: India: Boom what boom?