When To Believe

This week, a baby girl was born in New Jersey with microcephaly, a reminder that the Zika virus is not a distant threat. What is known and still unknown about Zika has fueled pseudoscience and paranoia. We look at a study about Zika-related conspiracy theories online, and how to debunk them. 

Plus: The Obama administration may soon release 28 remaining pages of the Congressional 9/11 report -- and they're likely about Saudi Arabia's role in the attacks. We dig into what's in there and why it matters. 

And, the story of New York Times reporter Jeffrey Schmalz, who transformed public perception of AIDS and the gay men and women dying from the disease.