How can all of the state's tiny, elusive nocturnal flyers be counted? That's not possible. But the downward spiral of several bat species in Wisconsin can be tracked through the work of passionate conservation professionals, specialized technology and, crucially, legions of enthusiastic volunteers.

How can livestock odors be measured and quantified in a systematic and fair way? Is it even possible to break down an odor into its component parts, or to identify an acceptable odor threshold? It turns out these questions are the subject of rigorous scientific research.