gives off heat by radiation, much of which travels away from
the earth to outer space from where it cannot be recovered.
So as heat energy is radiated at every transfer of energy
from one form to another, the remaining energy has less power
at each stage through the chain of conversions.
Do you want to bang your head?
The Law of Conservation of Energy ensures that all energy
goes somewhere. It does not disappear. A balance sheet can
be built up to show this, all 'energy in' must equal all 'energy
out'. This requirement for balance applies to the whole planet.
use the energy from fossil fuels to provide the power we need
for our industries, homes and transport.
The more developed a country gets, the more energy it requires.
The majority of households in developed countries have 1 car,
many have 2, and most have many energy-using domestic appliances.
To produce these cars and goods also requires energy; the
USA alone consumes about a quarter of the world's commercial
Every time we switch on a light or a machine we increase the
demand for electricity generation from power stations. We
are used to a continuous and clean supply of electricity in
our workplaces and homes. The effects of burning fossil fuels
are well known. Each time we use electricity we are indirectly
contributing to those effects.