Genocide and global warming, via BBC. "The Great Dying of the Indigenous Peoples of the Americas led to the abandonment of enough cleared land that the resulting terrestrial carbon uptake had a detectable impact on both atmospheric CO₂ and global surface air temperatures," Alexander Koch and colleagues write in their paper published in Quaternary Science Reviews.
A proper title is Genocide 'cooled the climate', not 'America Colonization cooled the climate'...
Oh PLEEZZEEE......let us all ignore the reported scientific instance of major and large eruption spanning the GLOBE as far back as the 1400's AD (including especially eruptions and spewing lava and smoke from the Washington State area, I.e. Mount Saint Helens.