All Items Tagged

“energy efficient”

Mar 5, 2014 12:05 PM ET // AFP
Electricity is created from the simple friction between two substances.
Mar 3, 2014 10:45 AM ET // Dave Levitan, IEEE Spectrum
Wave and tidal power innovations offer clear advantages over many of the other attempts made to draw energy from the oceans.
Dec 6, 2013 10:30 AM ET // Eric Niiler
New tech could lead to quieter jets, factories and construction equipment.
Feb 11, 2013 01:00 PM ET // Eric Bland
The tiny device uses the air we breathe and the food we eat to create almost enough electricity to run a pacemaker.