The glue was made from birch tar in a process that required forward ... Neanderthals in Italy may also have used pine tree resin for hafting 50,000 years ago. But this natural substance is not ...

But some things don’t need to be improved upon. Case in point: pine tar. Pine tar has been in existence since the days of the ...

But some things don’t need to be improved upon. Case in point: pine tar. Pine tar has been in existence since the days of the ...