"It was our first trial and we were surprised at how well it worked," says Norman Terry, a professor of plant and microbial biology at University of California - Berkeley. These genetically altered plants, in their initial trial, were able to absorb heavy metals, such as selenium, by over 400%. You can find the Wired article here.
Of course this brings to light a controversial subject in environmental ethics. While these plants might do good for the environment in certain aspects, can it be harmful for the earth in the long run? Can we control these genetically altered plants from spreading, mutating, and cross-breeding with plants that have not been genetically changed? Hopefully they are thinking or have thought about these issues. I wish them continuing success with these metal-eating, genetically altered plants.