There are many trillions of microbial organisms living in and on our bodies, outnumbering our own cells 3 to 1. (newscientist.com)
Manmade production of ammonia and nitrate fertilizers has exploded in recent decades and now vastly exceeds the amount of atmospheric nitrogen converted into reactive nitrogen by microbial organisms around the world. (sciencebuzz.org)
And Noah saved 2 of every known microbial organism, herded onto this boat from every continent, including arctic wolves and polar bears. (religion.blogs.cnn.com)