Eric Walker added The Anthropocene epoch: have we entered a new phase of planetary history? | Environment | The Guardian to a number of topics

Eric Walker added a number of topics to Geologists, and added Geologists to Geology and Scientists, researchers and academics

Eric Walker added The Anthropocene epoch: have we entered a new phase of planetary history? | Environment | The Guardian to Bill Ruddiman, and added Bill Ruddiman to Geologists