Materials: 1 glass, pencil, paper towel or coffee filter, black Crayola marker (or any color on hand — not permanent), tape. Directions: Cut a strip out of the coffee filter or paper towel.

This fundamental exercise doubles as an art project and a science experiment. Children get to watch a scientific phenomenon called chromatography in action while making some lovely coffee filter ...

News & Views Published: 01 November 2004 Finding time for allosteric interactions Irving W Wainer Nature Biotechnology 22, 1376–1377 (2004) Cite this article ...