Ever heard that old phrase “It's hot enough to cook an egg on a sidewalk”? It seems like hyperbole (and even a little gross), but the sun really is powerful enough to cook a variety of foods—provided ...
Every Boy Scout or Girl Guide probably had the experience of building a simple solar oven: an insulated box, some aluminum foil, and plastic wrap, and voila! On warm, sunny, summer days, you can bake.
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