Defense Environment Alert -- Rep. Jose Serrano (D-NY) introduced legislation Jan. 4 that would require the Defense Department to notify deploying soldiers of any depleted uranium (DU) use in their theater of operations and any associated health risks. DU is a heavy metal used in tank armor and armor-piercing munitions. The proposed legislation comes as DOD is under congressional mandate to study the health effects of depleted uranium exposure on active-duty or former soldiers who were exposed to the substance...