Solar Energy Today
For the last 200 years the world has relied on fossil fuels for its primary energy needs. However, fossil fuel supplies are limited. Some experts believe oil production will last only 35 years, while coal production may last 200 years. The Sun comes up every day. It is a free, renewable, and nonpolluting energy source. It is important to look at all these factors, because the world's energy needs grow as industry and population grows. Fortunately, technology has improved the way we collect and store sunlight and how we use it as a global energy.
Fuel for Thought
Currently about 86% of the world's energy comes from the burning of fossil fuels.