Depending on the size of the kiln, it took between one and six weeks for the fire to complete a full circle.
Would it make sense to revive the industrial windmill and again convert kinetic energy directly into mechanical energy?
The embodied energy of the memory chip alone exceeds the energy consumption of a laptop during its life expectancy of 3 years.
Wood, steel, aluminium, iron, glass, paper, plastics, copper, silicon, nickel, titanium, electronic grade silicon.
For almost every electronic device or oil driven machine there used to be a low-tech alternative that was powered by human muscles, water or wind.
Researchers are overly optimistic when they present the sustainability advantages of solar PV panels.
Almost 30 percent of energy use and 35 percent of CO2-emissions in China comes from the production of export goods.