Researchers have borrowed from biological structures called tubercles that humpback whales use to maneuver in the ocean to make a piezoelectric energy harvester for use as an airflow or fluid speed and direction-sensing device.
To make ships more eco-efficient, engineers have been working with alternative fuels. A Norwegian engineer is currently pursuing a new approach: With VindskipTM, he has designed a cargo ship that is powered by wind and gas. Software will ensure an optimum use of the available wind energy at any time.
Scientists report the development of two novel devices that derive power directly from evaporation — a floating, piston-driven engine that generates electricity causing a light to flash, and a rotary engine that drives a miniature car.
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