Kathleen Sebelius, secretary of the U.S. Department of Health and Human Services, will deliver the keynote address at the University of Colorado Boulderâs annual Conference on World Affairs to be held April 7-11. Sebeliusâ address, âThe Globalization of Health,â will be presented on Monday, April 7, at 11:30 a.m. in Macky Auditorium. All of the conferenceâs 200 panel discussions, performances and plenaries are free and open to the public.