Haley Mast is a freelance writer, fact-checker, and small organic farmer in the Columbia River Gorge. She enjoys gardening, reporting on environmental topics, and spending her time outside ...

When I was in elementary school, my teacher taught our class about the food pyramid and the importance of a balanced, healthy diet. If we were going to grow up to be big and strong, we needed to eat ...

Solar cells are an increasingly important source of renewable energy, but there’s still room for improvement. Stanford engineers have now developed a pyramid-shaped lens that can focus sunlight from ...