This online article gives a good overview of Gund Fellow John Todd's Living Machines. "Ecological design technology is based on the idea that man-made "machines" can be harnessed to mimic biological systems, giving us the power to restore environmental contaminants and neutralize the build-up of waste on the planet." Dr. Todd uses eco-technology to address the global waste-water crisis. He applies principles of bio-mimicry to create his Living Machines, which are essentially "networks of biological systems built to strategically transform industrial sewage into usable water."