‹
›
This content requires a premium subscription.
Please
log in
or
subscribe
to continue.
<iframe title="Libsyn Player" style="border: none" src="//html5-player.libsyn.com/embed/episode/id/39757815/height/90/theme/custom/thumbnail/yes/direction/backward/render-playlist/no/custom-color/87A93A/" height="90" width="100%" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe>
Science in 5
Polio: 99.9% Defeated. What Will It Take to End It for Good?
30
00:00:00
/ 00:05:40
30
