An attractive amethyst geode sits on my desk. Geodes are rocks with an internal cavity that is filled with crystals of a mineral. In the case of amethyst that mineral is quartz, tainted with iron...
Women have played a larger role in the history of science than is generally recognized. Although Marie Curie’s discovery of radium, Lise Meitner’s work on nuclear fission, Dorothy Hodgkin’s...
Imagine a wall-mounted device that continuously scans the air and alerts you to the presence of the coronavirus. This would be a boon for commercial buildings, hospitals, schools, and mass transit...
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