Tropical Diseases, Global Crisis

With the summer Olympics scheduled in August, there's growing concern about an outbreak of the Zika virus in Brazil, the host country. Have world health officials waited too long to find out if the virus really produces the birth defect microcephaly?

A monthly reality-check on the issues Americans care about most. Host Warren Olney draws on his decades of experience to explore the people and issues shaping – and disrupting - our world. How did everything change so fast? Where are we headed? The conversations are informal, edgy and always informative. If Warren's asking, you want to know the answer.