Arizona Republic: For most Valley residents, it's nothing more than a slimy green annoyance that clings to the side of their pools. Even the thought of it spreading rapidly would send them marching to the store for more chemicals. But algae growing exponentially and absorbing vast quantities of carbon dioxide from smokestacks at Arizona Public Service Co.'s Redhawk electric plant is being billed as an answer for greenhouse gases and a source for biodiesel and ethanol. advertisement A ...Link Via - www.ecoearth.info