FRAGMENT-MNP: A model of micro- and nanoplastic fragmentation in the environment. - Sam Harrison; Cansu Uluseker; Patrizia Pfohl; Katherine Santizo; Joana Sipe; Brandon Lopez; Antonia Praetorius; Richard K. Cross; Gbotemi A. Adediran; Claus Svendsen; Wendel Wohlleben; Mark Wiesner (J. Open Source Softw., 2025)