Humans are tool makers. Tools are present in some of our earliest known ancestors. They shaped us as much as we shaped them, evolutionarily. The problem we fac

Humans are tool makers. Tools are present in some of our earliest known ancestors. They shaped us as much as we shaped them, evolutionarily. The problem we face is that, in general, people are scientifically illiterate — including, crucially, policy makers. Our way forward almost certainly depends on technological solutions — and at the same time they remain our greatest threat.