Cisco has taken pole position in Greenpeace's green tech league, pushing previous leader IBM down to third place

Chip maker Intel, along with other technology companies, is working hard to improve its environmental standing

Industry group Green Grid is pushing for an international agreement on data centre standards

The environmental group has launched simultaneous attacks on Dell and Apple, on the eve of the launch of the iPad

Greenpeace has admitted that its hosting operations are powered by coal and nuclear power, after it criticised Facebook for building a coal-powered data centre