http://www.newscientist.com/article.ns?id=dn3627DU is both radioactive and toxic.
Past studies of DU in the environment have concluded that neither of these effects poses a significant risk. But some researchers are beginning to suspect that in combination, the two effects could do significant harm. Nobody has taken a hard look at the combined effect of both, says Alexandra Miller, a radiobiologist with the Armed Forces Radiobiology Research Institute in Bethesda, Maryland. "The bottom line is it might contribute to the risk."
She is not alone. The idea that chemical and radiological damage are reinforcing each other is very plausible and gaining momentum, says Carmel Mothersill, head of the Radiation and Environmental Science Centre at the Dublin Institute of Technology in Ireland. "The regulators don't know how to handle it. So they sweep it under the carpet."
Read "Before the dust settles", the New Scientist editorial on this story here.
http://www.newscientist.com/article.ns?id=dn3635The Royal Society highlighted huge gaps in our knowledge about DU, such as the level likely to cause kidney damage, the impact of DU on bone, how much DU can be inhaled in the years following a conflict, and the combined effect of DU's chemical and radiological effects. It even made recommendations for studies to be carried out on soldiers exposed to DU "in any future conflict". Environmental sampling, particularly of water and milk, would need to be done and local people informed of the results.
To reassure the Iraqi people, not to mention their own troops, coalition governments should set this research in motion, or let the WHO and UN Environment Programme carry it out. The UN agencies already have the study designs in place. Failing to support such research can only compound present uncertainties and fuel public suspicion.