Paper is a ubiquitous part of everyday life, but how is it made, and where did it originate? Ancient Egyptians made an early version of plant-based paper using papyrus — which is where the word "paper ...

Outside of a library in Cambridge, Massachusetts, an over-80-year-old copper beech tree is making music. As the tree photosynthesizes and absorbs and evaporates water, a solar-powered sensor attached ...