An array of tiny pieces of paraelectric material can sense the heat radiated by a person, and the pattern of the array's electrical outputs can then be used to construct an image.
Phasing old bulbs out by 2030 would save the output of 650 power plants and avoid the release of 700 million tons of carbon into the atmosphere each year.
A daily input of water, food, and energy of various kinds is matched by an output of sewage, solid waste, air pollutants, energy, and materials that have been transformed in some way.
In recent decades, our "love affair" with the car is being exported directly to the developing world, and it is increasingly apparent that this transfer is leading to disaster.
As for ANWR's impact on the California power crisis, environmentalists point out that oil is responsible for only 1% of the Golden State's electricity output and just 3% of the nation's.