mythologyandhistory, 
Did you know that the oldest known #adhesive was also chewing gum?
#Birch tar is in its simplest form, burned birch #bark. It forms a sticky black pitch that can be used as glue.
Evidence for #human (& #Neanderthal) use has been dated to 200k or the Old #Stone Age.
Birch tar is also a disinfectant & it has been found as a chewing gum in various locations in Europe.
One birch gum piece from 5700 yrs ago, contained a complete human #genome of a woman.
