One area that I would like to see examined in the study is the environmental fate of carbon nanotubes and similar structures.
I understand that on of the properties if nanotubes and buckminster fullerenes is their ability to uptaking large amounts of contaminants/heavy metals etc, possibly with benefit to environmental 'clean up' procedures. My concern is how the nanotubes containing the contaminants can then be collected, disposed of or otherwise dealt, or whether they will enter into natural systems only to release the contained pollutants under certain conditions. - Similar to the way you can use an resin beads (ionic exchange column? not sure of the correct term) to remove heavy metals from a solution and then flush them out using a concentrated acid.