Original sentence: Colaprete et al.This computer calculated instability is rooted in the geography of the region, leading the authors to speculate that the melting of the polar ice is a local phenomenon rather than a global one.conducted calculations with the Mars General Circulation Model show that the local climate around the Martian south pole may currently be in an unstable period
Edited sentence: Calculations with the Mars General Circulation Model show that the local climate around the Martian south pole may currently be in an unstable period.This computer calculated instability is rooted in the geography of the region, leading Colaprete et al.to speculate that the melting of the polar ice is a local phenomenon rather than a global one