Stone to Silicon

Materials · c. 2,500 BCE

Glass

Sand, soda and lime melted into a transparent solid.

Glass beads appear in Mesopotamia around 2500 BCE and core-formed vessels by 1500 BCE. Glass later made lenses, windows, labware and optical fiber.

See it in the living treeWikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 1

What it led to 10