The History of Material Science

For me, the first human-made material was bronze because that was something that doesn't exist in nature. For example, aerogel, you could make a jacket out of that. You'd have to stay quite still. And that's why you left working for Topman, didn't you? So in terms of the history of material science, I suppose you start with technology. You might say, well, there's a flint and you can connect it to a piece of wood to make a spear. What property does bronze have? It's made of what? Ten...