1. Past abrupt changes, tipping points and cascading impacts in the Earth system Brovkin, Victor; Brook, Edward; Williams, John W.; Bathiany, Sebastian; Lenton, Timothy M.; Barton, Michael; DeConto, Robert M.; Donges, Jonathan F.; Ganopolski, Andrey; McManus, Jerry F.; Praetorius, Summer; de Vernal, Anne; Abe-Ouchi, Ayako; Cheng, Hai; Claussen, Martin; Crucifix, Michel; Gallopín, Gilberto; Iglesias, Virginia; Kaufman, Darrell S.; Kleinen, Thomas; Lambert, Fabrice; van der Leeuw, Sander; Liddy, Hannah M.; Loutre, Marie-France; McGee, David; Rehfeld, Kira; Rhodes, Rachael; Seddon, Alistair W. R.; Trauth, Martin H.; Vanderveken, Lilian; Yu, Zicheng 2021 Articles BiogeochemistryPaleoclimatologyClimatic changesEcology