Lipids, a chemical family that includes cholesterol and fat, make up a major part of the average human diet. At 9 calories per gram -- compared to 4 calories per gram of carbohydrates and proteins -- fats serve as concentrated sources of energy to fuel your active lifestyle.
The Development of Rowing Equipment By Bill Miller This page contains information about the development of rowing equipment beginning about the end of the 18th century.
The first washing machine powered by electricity was invented by Alva J. Fisher in 1908. Fisher worked for the Hurley Washing Machine in Chicago and named his creation The Thor.