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Obsolete Technology

There is a lot of potential in past and often forgotten knowledge and technologies when it comes to designing a sustainable society.

The Sky is the Limit: Human-Powered Cranes and Lifting Devices

The only advantage that fossil-fuelled powered cranes have brought us, is a higher lifting speed

Wood Gas Vehicles: Firewood in the Fuel Tank

During the Second World War, almost every motorised vehicle in continental Europe was converted to use firewood.

Trolley Canal Boats

Only four years after the first experimental trolleybus, an ordinary steam canal boat was adapted to a trolleyboat.

Rings of Fire: Hoffmann Kilns

Depending on the size of the kiln, it took between one and six weeks for the fire to complete a full circle.

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?

Water Powered Cable Trains

Cable trains (or funiculars) are one of the most energy-efficient modes of transport out there.

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.

The Museum of Old Techniques

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.

Moonlight Towers: Light Pollution in the 1800s

At the end of the 19th century, many towns and cities were lit up by powerful electrical lamps placed on towers up to 300 feet (90 metres) high.

Tiles as a Substitute for Steel: The Art of the Timbrel Vault

The craftsmanship associated with timbrel vaulting has long vanished, but the achievements are still with us today.

A Steam Powered Submarine: The Ictíneo

Narcís Monturiol successfully resolved the two basic obstacles presented to submarine inventors: air supply and mechanical power.

The Citroen 2CV: Cleantech from the 1940s

In spite of all the high-tech that has been squeezed into cars, the 2CV from 1949 is still more energy efficient than the smallest Citroen today.