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 ...

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 ...