Algae Can Carry Cargo

Steve Nixon writes "Recently, a team of scientists devised a way to make single-celled algae bear loads over distances of several centimeters--a tactic that the researchers say could prove useful in tiny machines. Algae and other single-celled organisms power their movements with molecular motors. 'Scientists have long coveted these motors for use in micromachinery,' notes chemist Douglas B. Weibel of Harvard University.