Explore one of Earth's important energy resources. Projects from the history to how we use it today. Make s'mores in a solar oven, use solar energy to turn on a light, and more.

What is solar energy? -- Using solar energy for electricity -- Using solar energy for heat -- Materials -- Solar panel color test -- Solar oven s'mores -- Updraft tower -- Solar salt remover -- Fairy light lantern -- Simple solar fan -- Conclusion -- Quiz -- Glossary.