The companies making bicycles from wood
The forerunner of the bicycle - the laufmaschine or running machine - bears only a passing resemblance to the pedal-bikes we know today.
Invented in 1817, it had no chain and was powered by the rider pushing his feet along the ground in a walking or running motion.
Even more unusually, its frame was made from wood.
Jump forward to 2017, and a crop of bike makers is turning back the clock - at least in terms of using wood as a core material.
http://www.bbc.co.uk/news/business-41412627