Key anti-terrorism program Project Bioshield marks 20 years with new challenges

Project Bioshield, the federal bioterrorism preparedness program that's yielded vaccines effective against anthrax and Ebola, heads into its third decade anticipating threats far different from those it was originally created to prepare for. The federal program was launched in 2004, in the shadow of the Sept. 11 attacks, partly in response to a slew of...