New report argues hardware efficiency is key to tackling datacentre energy consumption

Large Californian facilities will be forced to disclose annual emissions from 2009

Democrat deal sees adoption of new Cafe standards move closer

Conservatives' propose scheme to enable homes and businesses to more easily sell green energy back to the grid

California and New York lead calls for airlines to be included in a cap-and-trade system

Defra invites feedback on plans to phase out energy profligate products

Printing giant claims wide-reaching environmental strategy has delivered cost and commercial benefits