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Animal Power

How to Make Biomass Energy Sustainable Again

From the Neolithic to the beginning of the twentieth century, coppiced woodlands, pollarded trees, and hedgerows provided people with a sustainable supply of energy, materials, and food.

Pigeon Towers: A Low-tech Alternative to Synthetic Fertilizers

Pigeon towers helped Persian farmers cultivate all kinds of crops on previously arid, thin-soil land.

How to Downsize a Transport Network: The Chinese Wheelbarrow

For being such a seemingly ordinary vehicle, the wheelbarrow has a surprisingly exciting history.

Wind Powered Factories: History (and Future) of Industrial Windmills

Would it make sense to revive the industrial windmill and again convert kinetic energy directly into mechanical energy?

Electric Road Trains

German engineer Max Schiemann was among the first engineers to develop a commercial trolleybus system for passengers at the turn of the 20th century. He also created some unique cargo systems.

Bring Back the Horses

Replacing tractors with real horse power could be the revolution that agriculture needs.