NEW YORK, Dec. 2 (UPI) -- New York police allege a passenger who hadn't paid his fare fatally stabbed a bus driver when he was denied a free transfer in Brooklyn.

NEW YORK, Dec. 1 (UPI) -- Police said they suspect a rider angered by not being given a free transfer stabbed a New York City bus driver to death Monday.

CAMBRIDGE, Mass., Oct. 22 (UPI) -- U.S. scientists have created a structured gel that rapidly changes color in response to a variety of stimuli, including temperature, pressure and humidity.

CAMBRIDGE, Mass., March 13 (UPI) -- MIT scientists said Wednesday they envision using revolutionary nanotechnology to create for the Army a lightweight battlesuit that will give future soldiers a