Eighty-three years ago, aircraft pilot Major Kurt Bilau (formerly of the Imperial German Air Corps) was intrigued by the abilities a properly designed propeller; he applied his curiosity to the design of a windmill in order to experiment with the possibility harnessing the power of the wind as a source of energy.
This magazine article briefly explains what a success that experiment was. Bilau's "aerodynamo" was able to convert a sixteen-mile per/hour wind into an amount of energy that was measured at sixty horse power.
These days, the good works of Kurt Bilau are very actively being improved upon and his same theory is being adapted to harness the power of underwater sea currents.
Click here to read a 1912 article that challenges the concept of global cooling.
Click here to read a 1947 article about the battle against air pollution.