New evidence shows that ancient farming practices led to a rise in the atmospheric emission of the heat-trapping gases carbon dioxide and methane — a rise that has continued since, unlike the trend at any other time in Earth’s geologic history.
New evidence shows that ancient farming practices led to a rise in the atmospheric emission of the heat-trapping gases carbon dioxide and methane — a rise that has continued since, unlike the trend at any other time in Earth’s geologic history.