Introduction
Over the past 50 years, the total world population has almost doubled. With
this massive increase of people on the planet, many of the Earth’s natural
resources, such as oil, coal and natural gas are being used up at an alarming
rate.
Sydney Harbour Bridge at night
As a result of this escalating energy demand, there is now increasing concern
about where our supplies of energy will come from in the future. Scientists are
predicting serious global problems if we continue the policy of using coal, oil
and gas as they suspect that we may now be helping to warm the world’s climate
by adding carbon dioxide to the atmosphere through burning coal, natural gas
and oil.
Worldwide there is a range of energy resources available to us. These energy
resources fall into two main categories, often called renewable and
non-renewable energy resources.
To understand the issues around the energy debate, it is important to
understand how we use our natural resources, what the difficulties are of
managing them and what we can all do to make a difference to the Earth’s
future.
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