Imagine visiting your favorite local park with a portable stove that’s 100 percent powered by the sun and heats up five times faster than a charcoal grill. Meet the SolSource Sport. One Earth Designs ...

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 ...

Eleven years ago, Crosby Menzies walked away from his marketing job for The Wall Street Journal’s London office. “Financially, I was doing fine but my heart just wasn’t in my work,” he recalled.

According to the World Health Organization (WHO), between 2 million and 5 million people—many of them children in developing countries—die each year from diseases resulting from contaminated water.