Mankind builds increasingly complex systems, feeding billions of people, reshaping the landscape and re-engineering the human body. Modern food cultivation enables population explosions while uranium enables incredible destruction. Mankind travels to the moon and performs heart transplants. Globally, people continue to struggle for civil rights, equality and peace. 100,000 years ago there were a few thousand hunter-gatherers on the African savannas. Today there are 7 billion of us in every corner of the globe.