With a dramatic image of a bustling city superimposed over a peaceful forest, the National Science Foundation's homepage on the ecology of infectious diseases is quite intriguing. After clicking on the image, visitors will be treated to an overview of this special report that asks: "Is our interaction with the environment somehow responsible for the increases in incidence of these diseases?" The report is divided into five sections, each exploring a different facet of the National Science Foundation's work on this problem. The sections include "Medical Mystery Solved" and "Lyme Disease on the Rise". Each of these sections includes helpful graphics, well-written text, and links to additional sites. Overall, the site will be most useful for science educators and members of the public health community.