The electricity that we use in our homes comes mainly from power stations that burn coal and gas. Our cars use petrol and diesel which comes from oil. We know that burning fossil fuels causes CO2 to be released into the atmosphere leading to global warming. If we keep using these fossil fuels at the same rate as today, we may use up all the world’s coal reserves in 200 years, the world’s natural gas reserves in 60 years and all the world’s oil reserves in 40 years. As the world’s population grows and demands for energy grow, these fossil fuels may run out sooner.
Next: Energy sources