Farmers pay a lot of money for nitrogen (N) fertilizer, especially on corn and wheat but also vegetable crops like tomatoes, pickles, melons, sweet corn, etc. Most N fertilizer is produced from 200 plants world wide using the Haber-Bosch process. Natural gas or coal is used with atmospheric N using high pressure and high temperatures. The coal or natural gas is a source of hydrogen while the atmosphere supplies the N to produce ammonia (NH3). About 96% of the N fertilizer is produced this way but it also has high greenhouse gas emissions, methane and carbon dioxide. The need for N fertilizer is currently about 100 billion tons per year.