Zero Emission

Scheme envisages car batteries being reused as power storage devices

IHI claims battery-powered vessel will cruise 120km on an eight-hour charge

Nation aims to capture 10 per cent of global market for plug-in autos by 2015

But businesses argue more clarity is still needed

Australian software automatically calculates and buys carbon credits according to computer power usage

Threatened by rising sea levels, Pacific island unveils zero-carbon strategy in attempt to boost clout at Copenhagen talks

Only 15 new homes have so far qualified as zero-carbon, but government insists it is on track to meet 2016 target

Greenpeace study argues world's energy needs can be met without nuclear or fossil fuels

Proposed guidelines for green non-domestic buildings to help firms compare rival standards

Building giant details plans to develop three more commercially viable zero carbon homes over next three years