Efficiency

Professor Martin Charter outlines the key drivers behind the acceleration of sustainable design up the business agenda

UPDATED: Pilot auction awards £1.28m to help save enough power at peak times to make 37 million cups of tea

Europe to become first place in world to force car makers to undergo more realistic tests in bid to reduce nitrogen oxide emissions

Major new report details how the world's most important emerging economies could be vulnerable to inter-locking sustainability risks

Utility becomes the latest energy giant to launch its own smart heating control system

Andrew Warren reveals how a network of SuperHome open days is helping to inspire carbon-saving improvements

Letter to mark start of Cold Home Week signed by 80 leading executives from companies, charities, and unions

Craig Bennett of Friends of the Earth argues there will be a winter crisis in the NHS for as long as governments fail to take cold homes and air pollution seriously

Prime Minister Modi converts Indian government building to energy efficient bulbs as part of installation programme in 100 cities

The Department of Energy is enlisting new corporate muscle in its bid to power businesses more efficiently with the Better Buildings Challenge