?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Varah%2C+A&rft.aufirst=A&rft.aulast=Varah&rft.date=January+2020&rft.title=Nature+Sustainability&rft.volume=3&rft.atitle=The+costs+of+human-induced+evolution+in+an+agricultural+system&rft.pages=63-71&rft.genre=article