Presence of plutonium and other evidence was found in core samples of the Crawford Lake sediments. The Anthropocene epoch is proposed as a chapter in Earth's history reflecting the transformation of the planet's climate and ecology as a result of human activity. The Anthropocene epoch has not yet been formally recognised by a scientific body called the International Commission on Stratigraphy. The scientists obtained core samples of sediment at Crawford Lake and sediments, soils, corals and ice samples at the other 11 sites. Crawford Lake sediments provided a record of accelerating changes that have unfolded in the past few decades, including traces of fly ash produced by burning fossil fuels.

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Persons: Crawford, Colin Waters, we've, Waters, Francine McCarthy, Andrew Cundy, Bill Laurance, David Stanway, Will Dunham Organizations: University of Leicester, International, Crawford Lake, Brock University, Industrial, University of Southampton, James Cook University, Thomson Locations: Crawford, Canada's Ontario, Toronto, Britain, Canada, Australia, Singapore