The yellowfever mosquioto (Aedes aegypti) typically prefers humid climates, but it has been able to establish itself in the arid southwestern United States by utilizing manmade containers in residential areas for breeding sites. A new study conducted near Tucson, Arizona, reports that, in particular, flower pots and the saucers underneath them hosted disproportionately more larval mosquitoes than other types of containers. (Photo credit: Flickr/U.S. Department of Agriculture)