Living organisms are created by chemistry. We are huge packages of chemicals.
Unfortunately, historians have become so absorbed in detailed research that they have tended to neglect the job of building larger-scale maps of the past.
Big History studies the history of everything, offering a way of making sense of our world and our role within it.
Modern scientific knowledge appeared piecemeal. Historians wrote about human history; physicists tackled the material world; and biologists studied the world of living organisms. But there were few links between these disciplines, as researchers focused on getting the details right.
I had this feeling that, somehow, we ought to be teaching not just the history of particular nations or particular regions, but the history of humanity.