"The brave new world of HIV/AIDS prevention" is the public lecture for the Watkins Visiting Professorship Lecture Series: Biological Sciences at 4 p.m. Tuesday, March 26, in 209 Hubbard Hall. The guest lecturer is Michael Hendry, a world-renowned cirologist and public health researcher. Much of his work since 1985 has focused on HIV and biomedical interventions to reduce HIV transmission. He also will present a scientific lecture, "Combination biomedical interventions to prevent HIV infections," at 4 p.m. Monday, March 25, in 218 Hubbard Hall.