A type of paper that has the thermal properties of glass but is flexible, foldable and optically transparent has been fabricated by scientists in Japan (Adv. Mater. 21, 1595–1598; 2009). The key to ...

You might have wondered why a cheesesteak bag or a pizza box becomes slightly see-through when touched by its greasy contents. To understand why, we need to understand how light interacts with matter.

The environmental impacts that can result from making forest and paper products are impossible to ignore. Millions of acres of forests are logged each year and, as a result, threatened species may be ...