How We Use Energy http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/ How we use energy http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/ http://needtoknow.nas.edu/energy/energy-use/