A host of scholars, scientists, journalists, and others have begun to bandy about the term 'the Anthropocene', a term popularized by the atmospheric chemist Paul Crutzen since 2000. Geologists are struggling vainly to create a common definition of the term to match definitions they accept for other eras, epochs, and periods such as the Miocene or the Holocene. Several big shifts took place to nudge us into the Anthropocene, but the biggest of all was the adoption of fossil fuels and the leaps in energy use since 1750. Food and fiber frontiers formed only a part of the impact on the land in the age of fossil fuels. The Anthropocene witnessed unprecedented global population growth. Energy and industrialization, population growth and urbanization brought on the Anthropocene. The recognition of climate change, and anxieties about future prospects, animated a new dimension of international politics and climate politics which centered on the question of how to reduce carbon emissions to the atmosphere.