When very large stars die, they create temperatures so high that protons begin to fuse in all sorts of exotic combinations, to form all the elements of the periodic table. If, like me, you're wearing a gold ring, it was forged in a supernova explosion.

I believe human beings mark a threshold in the development of the planet, of course, but it is only part of the picture. What Big History can do is show us the nature of our complexity and fragility and the dangers that face us, but it can also show us our power, with collective learning.

Living organisms are created by chemistry. We are huge packages of chemicals.

David Christian Quotes