We know David Stahl as a Principal Investigator in ENIGMA working in part on the microbial conversion of ammonia to nitrate, a major step in the global nitrogen cycle.
Not only is he an internationally renowned microbial ecologist, elected to the National Academy of Engineering in 2012; now he is also a local Seattle celebrity! His discovery, that ammonia-oxidizing archaea (AOA) microorganisms are the dominant nitrifiers in most natural systems, was honored by a plaque at the Seattle Aquarium. His team was first to isolate AOA microorganisms from a water sample taken from a fish tank at the Seattle Aquarium.