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Evidence that human ancestors used fire one million years ago

Date:
April 2, 2012
Source:
University of Toronto
Summary:
Scientists have identified the earliest known evidence of the use of fire by human ancestors. Microscopic traces of wood ash, alongside animal bones and stone tools, were found in a layer dated to one million years ago at the Wonderwerk Cave in South Africa.

View from the bottom of the excavated area towards the entrance to Wonderwerk Cave.
Credit: R. Yates

An international team led by the University of Toronto and Hebrew University has identified the earliest known evidence of the use of fire by human ancestors. Microscopic traces of wood ash, alongside animal bones and stone tools, were found in a layer dated to one million years ago at the Wonderwerk Cave in South Africa.

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"The analysis pushes the timing for the human use of fire back by 300,000 years, suggesting that human ancestors as early as Homo erectus may have begun using fire as part of their way of life," said U of T anthropologist Michael Chazan, co-director of the project and director of U of T's Archaeology Centre.

The research was published in the Proceedings of the National Academy of Sciences on April 2.

Wonderwerk is a massive cave located near the edge of the Kalahari where earlier excavations by Peter Beaumont of the McGregor Museum in Kimberley, South Africa, had uncovered an extensive record of human occupation. A research project, co-directed by U of T's Chazan and Liora Kolska Horwitz of Hebrew University, has been doing detailed analysis of the material from Beaumont's excavation along with renewed field work on the Wonderwerk site.

Analysis of sediment by lead authors Francesco Berna and Paul Goldberg (pictured below right) of Boston University revealed ashed plant remains and burned bone fragments, both of which appear to have been burned locally rather than carried into the cave by wind or water. The researchers also found extensive evidence of surface discoloration that is typical of burning.

"The control of fire would have been a major turning point in human evolution," said Chazan. "The impact of cooking food is well documented, but the impact of control over fire would have touched all elements of human society.

"Socializing around a camp fire might actually be an essential aspect of what makes us human."

Funding for the research was provided by the Social Sciences and Humanities Research Council of Canada, the National Science Foundation and the Wenner Gren Foundation. Other team members include James Brink and Sharon Holt of the National Museum, Bloemfontein, Marion Bamford of the University of Witswatersrand and Ari Matmon and Hagai Ron of Hebrew University. Research at Wonderwerk Cave is carried out in collaboration with the McGregor Museum, Kimberley and under permit for the South African Heritage Resources Agency.


Story Source:

The above story is based on materials provided by University of Toronto. The original article was written by Kim Luke. Note: Materials may be edited for content and length.


Journal Reference:

  1. Francesco Berna, Paul Goldberg, Liora Kolska Horwitz, James Brink, Sharon Holt, Marion Bamford, and Michael Chazan. Microstratigraphic evidence of in situ fire in the Acheulean strata of Wonderwerk Cave, Northern Cape province, South Africa. Proceedings of the National Academy of Sciences, April 2, 2012 DOI: 10.1073/pnas.1117620109

Cite This Page:

University of Toronto. "Evidence that human ancestors used fire one million years ago." ScienceDaily. ScienceDaily, 2 April 2012. <www.sciencedaily.com/releases/2012/04/120402162548.htm>.
University of Toronto. (2012, April 2). Evidence that human ancestors used fire one million years ago. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2012/04/120402162548.htm
University of Toronto. "Evidence that human ancestors used fire one million years ago." ScienceDaily. www.sciencedaily.com/releases/2012/04/120402162548.htm (accessed October 25, 2014).

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