A committee that advises the federal government on biosecurity issues recommended last month that the details of two experiments on the H5N1, or avian, influenza — including research conducted by UW-Madison bird flu expert Yoshihiro Kawaoka — not be made public due to fears that terrorists could use the information to create a bioweapon. It took this government-appointed body more than a month, but on Tuesday it finally explained in detail why it made that recommendation.