Ice cores suggest 16th-century pandemics may have caused declines in atmospheric CO₂
Photograph of Antarctic ice bubbles, retrieved from deep within the Antarctic Ice Sheet, which contain the Earth's history of atmospheric greenhouse gases. Credit: Thomas Bauska
Changes in human activity may have led to atmospheric CO2 levels declining in the 16th century, due to large-scale land use changes in the Americas during New World-Old World contact between 1450 and 1700 CE, suggests a Nature Communications paper. The…