?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Barker%2C+Stephen&rft.aufirst=Stephen&rft.aulast=Barker&rft.title=Science&rft.atitle=Distinct+roles+for+precession%2C+obliquity%2C+and+eccentricity+in+Pleistocene+100-kyr+glacial+cycles&rft.issue=6737&rft.date=2025&rft.volume=387&rft.genre=article