Phytoremediation Research (U.S. Army Corps of Engineers, Waterways Experiment Station) - Phytoremediation is the use of green plants to remove, contain, or render harmless environmental contaminants. It is a promising technology that addresses clean-up of organic solvents, PCBs, heavy metals, polyaromatic hydrocarbons, explosives and energet - http://el.erdc.usace.army.mil/phyto/
Phytoremediation Research Lab, University of California, Berkeley - Multi-disciplinary research laboratory in the Department of Plant and Microbial Biology, particularly interested in improving the efficiency with which plants remove and detoxify toxic metals - http://mollie.berkeley.edu/~terry
Hyperaccumulators and Phytoremediation - Metal-scavenging plants to cleanse the soil. Papers from Environmental Chemistry Laboratory, at USDA-ARS. - http://www.soils.wisc.edu/~barak/baraabst.htm
Ecolotree, Inc. - Describes and offers phytoremediation technology using trees. - http://www.ecolotree.com