The average onshore wind turbine is a good source of energy, but the same can’t be said of their smaller …

http://www.futuresciencenews.com/2017-08-15-vertical-axis-wind-turbines-harvest-turbulent-wind-more-efficiently.html

A team of computer scientists and electrical engineers at the University of Washington have designed and unveiled the world’s first battery-free …

http://www.futuresciencenews.com/2017-07-09-worlds-first-non-battery-cell-phone-harvests-ambient-radio-waves-to-power-itself.html