“The gum was discovered by an archaeology student from the University of Derby. Sarah Pickin found the lump of birch bark tar while on a dig in western Finland.
Neolithic people used the material as an antiseptic to treat gum infections, as well as a glue for repairing pots. Ms Pickin’s tutor, Professor Trevor Brown, said: “It’s particularly significant because well-defined tooth imprints were found on the gum.”“
- BBC
Just as un-biodegadable as current gum recipes! I guess we all should be still chewing birch bark