Raised structure tar – Birch bark tar vessel containing hot tar from a recently completed experiment using the ‘raised structure’ technique. Disclaimer: AAAS and EurekAlert! are not ...

Gum chewing independently arose across different cultures and regions at different times, says Jennifer Mathews, an ...

Reed wood, being lighter and more flexible, was used for the back sections. Birch bark tar was used as an adhesive and ...

This is the Zandmotor Neandertal birch tar-hafted tool. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or ...