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.

NASHVILLE, TENNESSEE — Not all students are relaxing on their summer break. Some are working on an oven that could help fight world hunger. "We call it a hybrid-barrel-panel design because it's a ...

On one ordinary day back in 2012, a hefty envelope turned up in my snail mail containing a very kind letter along with a mechanical drawing so detailed it made me want to chew my hair. The sender ...

For street food vendor Ian Duncun Onyango, it's part of his business. He cooks up boiled eggs and smokies (smoked sausages) ...