<p>A close look at what true science and true history can tell us about this most sacred Catholic relic.</p>

Learn about your ad choices: <a href="https://dovetail.prx.org/ad-choices">dovetail.prx.org/ad-choices</a>

Skeptoid #796: 9/11 Truthers, 20 Years Later

The true science behind our most popular urban legends. Historical mysteries, paranormal claims, popular science myths, aliens and UFO reports, conspiracy theories, and worthless alternative medicine schemes... Skeptoid has you covered. From the sublime to the startling, no topic is sacred. Weekly since 2006.