Most solar cookers work on basic principles. Sunlight is converted to heat energy that is retained for cooking. The cookers are portable, allowing one to cook at work sites or while pursuing outdoor ...

Campfires, charcoal grills, and gas-powered camping stoves can definitely make life easier for hungry campers, but they can’t do everything. Sometimes, the only source of heat for cooking is 93 ...

Editor’s Note: This story was identified by Call to Earth guest editor Rodrigo Pacheco. He is a chef who grows sustainable food at his restaurant and creative permaculture project in Ecuador, and he ...

UNHCR is testing a newly-designed solar cooker in two Kenyan refugee camps facing a shortage of firewood. The agency hopes that the stove project can lessen the impact of refugee influxes on the ...

use the invention process to design, build, and test a solar cooker. describe how transmission, absorption, and reflection are used in a solar cooker to heat water. evaluate what variables contribute ...

Even at the ripe of age of 79, I am living proof of the old adage, “You learn something new every day.” Recently, I was visiting someone who had a solar cooker on her deck. I don’t think I’d ever seen ...

The first step in any invention process is identifying a need or want for something—in this case it is an inexpensive and environmentally safe way to cook food. One solution to that, the one you will ...