"[D]aily air samples were taken at several locations in San Antonio and Austin over a 17-week period. The samples were sent to Berkeley Lab where they were analyzed by the microarray. It found 1,800 types of bacteria, including some pathogens, wafting in the air over the two cities. This diverse population matches the complexity of soil populations, which is considered to be one of the richest habitats for microbes."
You hear that, Texas readers? Your air is teeming with bacteria! What do you have to say about that?
Note that this research is being funded in the name of homeland security. Everything's gotta have a reason I guess, but science for its own sake is fascinating enough, imo.