Forbes
Addis Energy, a startup co-founded by Prof. Yet-Ming Chiang is using the earth “as a chemical reactor to make ammonia in a cleaner way,” reports Alex Knapp for Forbes. The team identifies “rocky formations underground with large amounts of iron,” explains Knapp. “Then they inject those rocks with water, nitrogen and a chemical catalyst. That causes the oxygen in the water to bind with the iron in the rocks—making rust—freeing the hydrogen, which reacts with nitrogen to form ammonia.”