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Astronomy

End of the Line for Hubble?

With a space shuttle mission to repair and upgrade the Hubble Space Telescope now canceled, astronomers are pondering how to best use the flying observatory during its final years.

Math

Waring Experiments

Expressing integers as the sums of squares or other powers has a long history.

Humans

From the July 14, 1934, issue

Desert plants cope with permanent drought, study of twins gives clues to epilepsy, and airplanes collect weather information in flight.

Animals

Sparrows Cheat on Sleep: Migratory birds are up at night but still stay sharp

During their fall migration season, white-crowned sparrows sleep only about a third as much as they do at other times of the year without becoming slow-witted.