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 le

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.