The Agricultural Revolution
- Episode aired Jan 26, 2012
John Green examines the dawn of human civilization and goes over the advantages and disadvantages of agriculture. He gives an open letter to elephants.John Green examines the dawn of human civilization and goes over the advantages and disadvantages of agriculture. He gives an open letter to elephants.John Green examines the dawn of human civilization and goes over the advantages and disadvantages of agriculture. He gives an open letter to elephants.