The human power required to achieve a speed of 30 km/h in a velomobile is only 79 watts, compared to 271 watts on a normal bicycle.
Flushing the water closet wreaks ecological havoc, deprives agricultural soils of essential nutrients and makes food production dependent on fossil fuels.
Estimates about the fuel efficiency of aircraft ignore the record of the pre-jet era.
Ropewalk factories are some of the most remarkable industrial workshops and buildings in history.
Not so long ago, each profession or trade had adopted the knots best suited to its requirements, and knotting was part of their daily lives.
We don’t need better batteries, we need better cars.
One hundred years ago electric cars were a common sight on city streets in Europe and the United States.
The only advantage that fossil-fuelled powered cranes have brought us, is a higher lifting speed
During the Second World War, almost every motorised vehicle in continental Europe was converted to use firewood.
Only four years after the first experimental trolleybus, an ordinary steam canal boat was adapted to a trolleyboat.
Increasing the share of renewable energy will not make us any less dependent on fossil fuels as long as total energy consumption keeps rising.
We don’t need any new cycling infrastructure. What we need is to clear the current road infrastructure of inefficient vehicles and replace them with efficient ones.