MOSAIC

Little Ice Age Linked to Die-Off in the Americas

of more than 55 million New World natives—led to the Little Ice Age, an anomalous drop in global temperature 1570 to 1694 known as the Little Ice Age. That is the conclusion of scientists from the University College London and the University of Leeds. During roughly the same era, the researchers write in the March 2019 , less carbon dioxide concentrated in the air. This coincided with the only period in the past 2,000 years that saw the global temperature drop. Reviewing population estimates, land use studies, and atmospheric carbon dioxide recorded in Antarctic ice cores, the team mapped an extensive depopulation in the New