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Chemistry

Energy in Motion

The molecular machines of living cells harvest energy out of randomness, and scientists are learning how to do the same with artificial molecules.

Earth

Find My Valentine—or Other Places

The federal Geographic Names Information System lists 14 sites around the nation named Valentine—Including Alta Mills, Kan., and Bedison, Mo., for which Valentine is an alternate moniker. You can search for locations that may share your name, a name associated with some holiday (like Santa Claus, Ind.), or the name of an object of your […]

Humans

From the February 12, 1938, issue

Radio tower reaches for the sky, making a canyon the hard way, and forecasting the next big drought.