Presenter 1: A hazard is something that can cause harm. Presenter 2: Such as burning yourself on a Bunsen burner or other equipment that gets very hot. Presenter 1: Notice the symbol here on this ...

It's the Bunsen burner. FLATOW: Oh, the Bunsen burner. MARKEL: And we all know what it is. It's the iconic symbol of high school chemistry. But how many people know who Bunsen was? (SOUNDBITE OF ...