According to a map of excess nitrogen per hectare of cropland, countries like China, Netherlands, Saudi Arabia, Pakistan, Egypt, and Venezuela are using more nitrogen for fertilizers than the crops can even absorb. “This excess contributes to more emissions and causes other problems, for instance with run-off into waterways,” she continues. “The incentives right now in the agricultural system are for extreme overproduction, especially around commodity crops, like corn, soybeans, and wheat, which require these cheap chemical inputs.”