{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T06:28:56Z","timestamp":1792045736101,"version":"4.4.0"},"reference-count":8,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"6577","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Science"],"published-print":{"date-parts":[[2022,1,14]]},"abstract":"<jats:p>\n            Madsen\n            <jats:italic>et al<\/jats:italic>\n            . question the reliability of calibrated radiocarbon ages associated with human footprints discovered recently in White Sands National Park, New Mexico, USA. On the basis of the geologic, hydrologic, stratigraphic, and chronologic evidence, we maintain that the ages are robust and conclude that the footprints date to between ~23,000 and 21,000 years ago.\n          <\/jats:p>\n          <jats:p>\n            Madsen\n            <jats:italic>et al<\/jats:italic>\n            . (\n            <jats:xref ref-type=\"bibr\">\n              <jats:italic>1<\/jats:italic>\n            <\/jats:xref>\n            ) question the veracity of calibrated radiocarbon ages used to constrain the antiquity of human trackways discovered recently at White Sands National Park (WHSA) Locality 2, New Mexico, USA (\n            <jats:xref ref-type=\"bibr\">\n              <jats:italic>2<\/jats:italic>\n            <\/jats:xref>\n            ). The ages were derived from seeds of the aquatic plant\n            <jats:italic>Ruppia cirrhosa<\/jats:italic>\n            , which they suggest may suffer from hard-water (or reservoir) effects, making them too old, potentially by thousands of years. We were well aware of this possibility, investigated it, and presented several lines of evidence that argued against such a problem. Here we respond to each of their four primary points.\n          <\/jats:p>","DOI":"10.1126\/science.abm6987","type":"journal-article","created":{"date-parts":[[2022,1,14]],"date-time":"2022-01-14T20:36:52Z","timestamp":1642192612000},"source":"Crossref","is-referenced-by-count":15,"title":["Response to Comment on \u201cEvidence of humans in North America during the Last Glacial Maximum\u201d"],"prefix":"10.1126","volume":"375","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5843-6219","authenticated-orcid":true,"given":"Jeffrey S.","family":"Pigati","sequence":"first","affiliation":[{"name":"US Geological Survey, Denver Federal Center, Box 25046, MS 980, Denver CO 80225, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2404-0264","authenticated-orcid":true,"given":"Kathleen B.","family":"Springer","sequence":"additional","affiliation":[{"name":"US Geological Survey, Denver Federal Center, Box 25046, MS 980, Denver CO 80225, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3063-8844","authenticated-orcid":true,"given":"Matthew R.","family":"Bennett","sequence":"additional","affiliation":[{"name":"Institute for Studies in Landscapes and Human Evolution, Bournemouth University, Poole BH12 5BB, UK."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0309-7632","authenticated-orcid":true,"given":"David","family":"Bustos","sequence":"additional","affiliation":[{"name":"White Sands National Park, National Park Service, Holloman AFB, NM 88330, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6246-6717","authenticated-orcid":true,"given":"Thomas M.","family":"Urban","sequence":"additional","affiliation":[{"name":"Department of Classics and Cornell Tree Ring Laboratory, Cornell University, Ithaca, NY 14853, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vance T.","family":"Holliday","sequence":"additional","affiliation":[{"name":"School of Anthropology, University of Arizona, Tucson, AZ 85721, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6313-6405","authenticated-orcid":true,"given":"Sally C.","family":"Reynolds","sequence":"additional","affiliation":[{"name":"Institute for Studies in Landscapes and Human Evolution, Bournemouth University, Poole BH12 5BB, UK."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2391-8175","authenticated-orcid":true,"given":"Daniel","family":"Odess","sequence":"additional","affiliation":[{"name":"Cultural Resources Directorate, National Park Service, Washington, DC 20240, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_1_2_2","article-title":"Comment on \u201cEvidence of humans in North America during the Last Glacial Maximum\u201d","volume":"374","author":"Madsen D. B.","year":"2021","unstructured":"D. B. Madsen, L. G. Davis, D. Rhode, C. G. Oviatt, Comment on \u201cEvidence of humans in North America during the Last Glacial Maximum\u201d. Science 374, eabm4678 (2021).","journal-title":"Science"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.abg7586"},{"key":"e_1_3_1_4_2","unstructured":"B. T. Newton B. Allen New Mexico Bureau of Geology and Mineral Resources Open-File Report 559 (2014)."},{"key":"e_1_3_1_5_2","unstructured":"W. R. Belcher D. S. Sweetkind C. B. Hopkins M. E. Poff U.S. Geological Survey Scientific Investigations Report 2018\u20135151 (2018); https:\/\/doi.org\/10.3133\/sir20185151.10.3133\/sir20185151"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.224.4644.58"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","DOI":"10.1017\/S0033822200055909"},{"key":"e_1_3_1_8_2","first-page":"9","article-title":"Evidence for late Pleistocene hydrologic and climatic change from Lake Otero, Tularosa Basin, south-central New Mexico","volume":"31","author":"Allen B. D.","year":"2009","unstructured":"B. D. Allen, D. W. Love, R. G. Myers, Evidence for late Pleistocene hydrologic and climatic change from Lake Otero, Tularosa Basin, south-central New Mexico. N. M. Geol. 31, 9\u201325 (2009).","journal-title":"N. M. Geol."},{"key":"e_1_3_1_9_2","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-earth-040610-133425"}],"container-title":["Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.science.org\/doi\/pdf\/10.1126\/science.abm6987","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,1,15]],"date-time":"2024-01-15T23:11:44Z","timestamp":1705360304000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.science.org\/doi\/10.1126\/science.abm6987"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1,14]]},"references-count":8,"journal-issue":{"issue":"6577","published-print":{"date-parts":[[2022,1,14]]}},"alternative-id":["10.1126\/science.abm6987"],"URL":"https:\/\/doi.org\/10.1126\/science.abm6987","relation":{},"ISSN":["0036-8075","1095-9203"],"issn-type":[{"value":"0036-8075","type":"print"},{"value":"1095-9203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,1,14]]},"article-number":"eabm6987"}}