PHILADELPHIA, Feb. 27 (UPI) -- U.S. scientists have demonstrated living human nerve cells can be engineered into a network that might be used to repair nervous system damage.

WASHINGTON, Jan. 23 (UPI) -- The number of recruits entering the U.S. Army with high school diplomas hit a new low last year, a research group reported.

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SAN DIEGO, Dec. 20 (UPI) -- Scientists in San Diego have proved the theory that Christmas tree lights indeed tie themselves in knots while in storage.

WASHINGTON, Dec. 11 (UPI) -- U.S. Defense Department officials say all military branches met their recruiting goals in November despite the continuing unpopularity of the war in Iraq.

SAN DIEGO, Oct. 4 (UPI) -- U.S. scientists have produced the first physics model of how knots form.

WASHINGTON, Aug. 10 (UPI) -- The U.S. Department of Defense announced Friday that the Army exceeded their recruiting goals for July.

WASHINGTON, Aug. 5 (UPI) -- The U.S. Army is offering bonuses of as much as $20,000 to new recruits who agree to report to basic training within a month.

WASHINGTON, June 19 (UPI) -- The U.S. Army is increasingly accepting recruits who have criminal records for misdemeanors in the face of dwindling numbers, the Chicago Sun-Times reports.