How Did Humans Make the First Glue?

The first glue was not school paste. Nobody was making a paper volcano. Somebody had a sharp rock, a stick, and a problem: the rock kept leaving. A flake in a hand is a tool. A flake on a stick is a machine. Nothing in nature promised those two would stay married. Cord slips in the rain. So someone invented a sticky argument between chemistry and winter. The museum blob is not the beginning. It is the blob that did not evaporate. Birch tar. Bitumen. Resin. Ochre and fat. The amateur batches became dirt. The professional batches got photographed. This video rebuilds the first glue the same way as the first needle. Fire, bark, failed smears, a fingerprint in tar, and why the joint is the tool. Next: Stone Age lamp. Subscribe if you want the first inventions, one unhinged tool at a time.