Energy is the driving force for our civilization. We use energy in everyday routine, to function and to work. The machines and devices that humans have invented also use energy. But until now, our lifestyle was enabled mainly by non-renewable sources of energy.
From dead plants and animals to carbon-rich sediments, it takes a long time [...]
Nowadays, when our necessities pollute the world, the bicycle remains the most efficient eco form of transportation and a highly efficient instrument in maintaining a healthy body.
Scientific studies prove that by transfering one type of energy to other types, biking improves the metabolism. Basically, the chemical food energy is used to power the mechanical work [...]