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VOL. 23, NO. 15FEBRUARY 20, 1998

Astronomers Study the Shape of the Universe
Ari Buchalter and David Helfand use a concave mirror to demonstrate the idea that objects further away can look larger. Their hands are about five inches from the mirror’s surface.—See FULL STORY.

Researchers Believe REM Sleep May Be Another Way of Seeing

A Columbia researcher is challenging conventional views on the function of rapid eye movement (REM) sleep.

  According to David Maurice, professor of ocular physiology in the department of ophthalmology at Columbia-Presbyterian Medical Center, REM sleep may have more to do with vision than with dreams.—See FULL STORY.