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A peptide may be the key to happiness

LOS ANGELES, March 16 (UPI) -- A specific peptide -- a neurotransmitter called hypocretin -- greatly increased when subjects were happy but dropped when they were sad, U.S. researchers say.

Study: Seals sleep with half their brain

TORONTO, Feb. 19 (UPI) -- Canadian researchers say a discovery of how seals can sleep with only half their brain at a time could help in research into human sleep problems.

U.S. 'Superman' copyright to be shared

LOS ANGELES, March 30 (UPI) -- The U.S. copyright for the "Superman" trademark will no longer be the sole property of Time Warner thanks to a federal judge's ruling last week.

Peptide may reverse sleep deprivation

WINSTON-SALEM, N.C., Jan. 1 (UPI) -- The effects of sleep deprivation on cognitive performance can be reversed when the brain peptide, orexin-A, is administered in monkeys, a U.S. study found.

Summary judgment is against 'Smallville'

LOS ANGELES, April 5 (UPI) -- Warner Bros. says it will appeal a federal judge's finding that the WB's "Smallville" may be violating the copyright owned by the creator of "Superboy."

Newborn dolphins don't sleep for a month

LOS ANGELES, June 30 (UPI) -- Researchers at the University of California at Los Angeles have learned newborn dolphins and killer whales and their mothers stay awake for a month after birth.

Histamine brain cells critical for waking

LOS ANGELES, May 26 (UPI) -- Scientists at the University of California at Los Angeles have discovered brain cells containing the chemical histamine are critical for waking.

Stories of modern science ...

, Nov. 2 (UPI) -- Stories of modern science ... By United Press International
JIM KLING, UPI Science Writer
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