"Oh ye seekers after perpetual motion, how many vain
chimeras have you pursued?
Go and take your place with the alchemists."
— Leonardo da Vinci, 1494
The world has been aware of a possible energy crisis for quite
some time now. Decades ago, scientists predicted that we may soon
run out of fossil fuels – especially petroleum. It did not
come to pass because new reserves of oil were found. But,
eventually we will run out of fossil fuels someday.
This has led to research in wind, solar, nuclear, and other
sources of energy and at the same time enormous strides have been
made in making everything we use more energy efficient. This
follows the principle of energy (a penny) saved is energy (a penny)
earned.
