3 ms·
URL: https://www.youtube.com/watch?v=RfdZTZQvuCo& https://www.youtube.com/watch?v=RfdZTZQvuCo& Penn and Teller on Vaccinations. This really drives home the poi
by rixrax 8y ago
URL: https://www.youtube.com/watch?v=RfdZTZQvuCo& https://www.youtube.com/watch?v=RfdZTZQvuCo&
Penn and Teller on Vaccinations. This really drives home the point of herd immunity ( in ~ 90 seconds ).