Response to Comment on "A global environmental crisis 42,000 years ago"

Alan Cooper¹, Chris S M Turney², Jonathan Palmer³, Alan Hogg⁴, Matt McGlone⁵, Janet Wilmshurst^{5

6}, Andrew M Lorrey⁷, Timothy J Heaton⁸, James M Russell⁹, Ken McCracken¹⁰, Julien G Anet¹¹, Eugene Rozanov^{12

13

14}, Marina Friedel¹², Ivo Suter¹⁵, Thomas Peter¹², Raimund Muscheler¹⁶, Florian Adolphi¹⁷, Anthony Dosseto¹⁸, J Tyler Faith¹⁹, Pavla Fenwick²⁰, Christopher J Fogwill²¹, Konrad Hughen²², Matthew Lipson²³, Jiabo Liu²⁴, Norbert Nowaczyk²⁵, Eleanor Rainsley²¹, Christopher Bronk Ramsey²⁶, Paolo Sebastianelli²⁷, Yassine Souilmi²⁸, Janelle Stevenson²⁹, Zoe Thomas³, Raymond Tobler²⁸, Roland Zech³⁰

Affiliations

¹ South Australian Museum, Adelaide, SA 5000, Australia, and BlueSky Genetics, P.O. Box 287, Adelaide, SA 5137, Australia.
² Chronos 14Carbon-Cycle Facility and Earth and Sustainability Science Research Centre, University of New South Wales, Sydney, NSW 2052, Australia.
³ Chronos Carbon-Cycle Facility and Earth and Sustainability Science Research Centre, University of New South Wales, Sydney, NSW 2052, Australia.
⁴ Radiocarbon Dating Laboratory, University of Waikato, Hamilton, New Zealand.
⁵ Ecosystems and Conservation, Landcare Research, P.O. Box 69040, Lincoln, New Zealand.
⁶ School of Environment, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
⁷ National Institute of Water and Atmospheric Research Ltd., Auckland, New Zealand.
⁸ School of Mathematics and Statistics, University of Sheffield, Sheffield S3 7RH, UK.
⁹ Department of Geological Sciences, Brown University, Providence, RI 02912, USA.
¹⁰ 64 Burradoo Road, Burradoo, NSW, Australia.
¹¹ Zurich University of Applied Sciences, Centre for Aviation, Winterthur, Switzerland.
¹² Institute for Atmospheric and Climatic Science, ETH Zurich, Zurich, Switzerland.
¹³ Physikalisch-Meteorologisches Observatorium Davos and World Radiation Center, Davos, Switzerland.
¹⁴ Department of Physics of Earth, Faculty of Physics, St. Petersburg State University, St. Petersburg, Russia.
¹⁵ Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf, Switzerland.
¹⁶ Department of Geology, Quaternary Sciences, Lund University, Lund, Sweden.
¹⁷ Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany.
¹⁸ Wollongong Isotope Geochronology Laboratory, School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia.
¹⁹ Natural History Museum of Utah and Department of Anthropology, University of Utah, Salt Lake City, UT 84108, USA.
²⁰ Gondwana Tree-Ring Laboratory, P.O. Box 14, Little River, Canterbury 7546, New Zealand.
²¹ School of Geography, Geology and the Environment, University of Keele, Keele, Staffordshire, UK.
²² Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA.
²³ Centre for Excellence in Climate System Science, University of New South Wales, Sydney, NSW 2052, Australia.
²⁴ Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
²⁵ Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Section 4.3, Potsdam, Germany.
²⁶ Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, Oxford OX1 3TG, UK.
²⁷ Faculty of Mathematics, Astronomy and Physics (FAMAF), National University of Córdoba, Córdoba, Argentina, and School of Chemistry, University of New South Wales, Kensington, NSW 2052, Australia.
²⁸ Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5000, Australia.
²⁹ Archaeology and Natural History, School of Culture History and Language, ANU College of Asia and the Pacific, Canberra, ACT 2601, Australia.
³⁰ Institute of Geography, Friedrich-Schiller-University Jena, Jena, Germany.

PMID: 34793228
DOI: 10.1126/science.abh3655

Free article

Comment

Response to Comment on "A global environmental crisis 42,000 years ago"

Alan Cooper et al. Science. 2021.

Free article

. 2021 Nov 19;374(6570):eabh3655.

doi: 10.1126/science.abh3655. Epub 2021 Nov 18.

Authors

Affiliations

¹ South Australian Museum, Adelaide, SA 5000, Australia, and BlueSky Genetics, P.O. Box 287, Adelaide, SA 5137, Australia.
² Chronos 14Carbon-Cycle Facility and Earth and Sustainability Science Research Centre, University of New South Wales, Sydney, NSW 2052, Australia.
³ Chronos Carbon-Cycle Facility and Earth and Sustainability Science Research Centre, University of New South Wales, Sydney, NSW 2052, Australia.
⁴ Radiocarbon Dating Laboratory, University of Waikato, Hamilton, New Zealand.
⁵ Ecosystems and Conservation, Landcare Research, P.O. Box 69040, Lincoln, New Zealand.
⁶ School of Environment, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
⁷ National Institute of Water and Atmospheric Research Ltd., Auckland, New Zealand.
⁸ School of Mathematics and Statistics, University of Sheffield, Sheffield S3 7RH, UK.
⁹ Department of Geological Sciences, Brown University, Providence, RI 02912, USA.
¹⁰ 64 Burradoo Road, Burradoo, NSW, Australia.
¹¹ Zurich University of Applied Sciences, Centre for Aviation, Winterthur, Switzerland.
¹² Institute for Atmospheric and Climatic Science, ETH Zurich, Zurich, Switzerland.
¹³ Physikalisch-Meteorologisches Observatorium Davos and World Radiation Center, Davos, Switzerland.
¹⁴ Department of Physics of Earth, Faculty of Physics, St. Petersburg State University, St. Petersburg, Russia.
¹⁵ Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf, Switzerland.
¹⁶ Department of Geology, Quaternary Sciences, Lund University, Lund, Sweden.
¹⁷ Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany.
¹⁸ Wollongong Isotope Geochronology Laboratory, School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia.
¹⁹ Natural History Museum of Utah and Department of Anthropology, University of Utah, Salt Lake City, UT 84108, USA.
²⁰ Gondwana Tree-Ring Laboratory, P.O. Box 14, Little River, Canterbury 7546, New Zealand.
²¹ School of Geography, Geology and the Environment, University of Keele, Keele, Staffordshire, UK.
²² Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA.
²³ Centre for Excellence in Climate System Science, University of New South Wales, Sydney, NSW 2052, Australia.
²⁴ Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
²⁵ Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Section 4.3, Potsdam, Germany.
²⁶ Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, Oxford OX1 3TG, UK.
²⁷ Faculty of Mathematics, Astronomy and Physics (FAMAF), National University of Córdoba, Córdoba, Argentina, and School of Chemistry, University of New South Wales, Kensington, NSW 2052, Australia.
²⁸ Australian Centre for Ancient DNA, University of Adelaide, Adelaide, SA 5000, Australia.
²⁹ Archaeology and Natural History, School of Culture History and Language, ANU College of Asia and the Pacific, Canberra, ACT 2601, Australia.
³⁰ Institute of Geography, Friedrich-Schiller-University Jena, Jena, Germany.

PMID: 34793228
DOI: 10.1126/science.abh3655

Abstract

Our paper about the impacts of the Laschamps Geomagnetic Excursion 42,000 years ago has provoked considerable scientific and public interest, particularly in the so-called Adams Event associated with the initial transition of the magnetic poles. Although we welcome the opportunity to discuss our new ideas, Hawks’ assertions of misrepresentation are especially disappointing given his limited examination of the material.

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Comment on "A global environmental crisis 42,000 years ago".
Hawks J. Hawks J. Science. 2021 Nov 19;374(6570):eabh1878. doi: 10.1126/science.abh1878. Epub 2021 Nov 18. Science. 2021. PMID: 34793232

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Response to Comment on "A global environmental crisis 42,000 years ago"

Affiliations

Response to Comment on "A global environmental crisis 42,000 years ago"

Authors

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Abstract

Comment on

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