Podcast: Tracking Zika, the evolution of sign language, and changing hearts and minds with social science

Online news editor Catherine Matacic shares stories on the evolution of sign language, short conversations than can change minds on social issues, and finding the one-in-a-million people who seem to be resistant to certain genetic diseases—even if they carry genes for them.
Nuno Faria joins host Sarah Crespi to explain how genomic analysis can track Zika’s entry date into Brazil and follow its spread.  
[Image: r.a. olea/Flickr]