The latest news on energy efficiency
Magnetic microprocessors could use million times less energy than today's silicon chips.
Certified buildings save money and the environment.
Stretching could improve efficiency of material used in batteries, fuel cells and water purification.
Researchers have developed catalysts that convert harmful nitrogen oxides to nitrogen and water vapor.
Harvesting waste heat holds promise for making cars, power plants, and solar panels more efficient.
Computers might one day recycle part of their own waste heat.
New variety of photosynthetic pigment is the first discovered in 60 years.
Switching off lights could have a much bigger impact on reducing emissions than previously thought.
Wood-burning power plants release more greenhouse gases into the air than coal over time.