Difference between Bronze and Iron...?
1. From http://en.wikipedia.org/wiki/Bronze
"With the exception of steel, bronze is superior to iron in nearly every application."
2. From http://en.wikipedia.org/wiki/Three-age_system
[People switched from the Bronze Age to the Iron Age because] "no one would have wanted to use bronze tools if there had been iron ones around instead."
Maybe the second statement should refer to steel instead of (pure) iron. Did the Iron Age start with the use of pure iron, or did it start with steel? If it started with pure iron, then how was it an advantage over bronze? And if it started with steel, then shouldn't it be called the Steel Age instead of the Iron Age?