Eric Walker added (PDF) Simplifying the stratigraphy of time to Jan Zalasiewicz

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 (PDF) Simplifying the stratigraphy of time and The Anthropocene epoch: have we entered a new phase of planetary history? | Environment | The Guardian to Jan Zalasiewicz, and added Jan Zalasiewicz to Geologists

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