The book “The Alchemy of Air” is a fascinating read.
nowadays there is a lot of interest[1] in the older and less-efficient Birkeland–Eyde process because you can scale it to the size of a trailer and deploy it on-site to farms: https://www.nitricity.co/
Blue green algae (cyanobacteria) can fix nitrogen from the air. There are other symbiotic bacteria that do the same in nodules inside of plant's roots (like legumes).
Not sure how this is Nobel Prize worthy. I've grown blue green algae and legumes at home.