In the new appropriate technologies workshop, Philly Earth students learned the design constraints for solar ovens and how to construct one out of recycled materials.

Solar cooking is the simplest, safest, most convenient way to cook food without consuming fuels or heating up the kitchen. Many people choose to solar cook for these reasons. But for hundreds of millions of people around the world who cook over fires fueled by wood or dung, and who walk for miles to collect wood or spend much of their meager incomes on fuel, solar cooking is more than a choice, it is a blessing. There are numerous reasons to cook the natural way — with the sun.

Measure twice, cut once.

Step two: cover with tinfoil.