Humans seem to be the only animals that cry from emotion. This Valentine’s Day, we’re wondering: What makes our tears so special? (Updated from 2022)For more, go to <a href="http://vox.com/unexplainable">http://vox.com/unexplainable</a>It’s a great place to view show transcripts and read more about the topics on our show.Also, email us! <a href="mailto:unexplainable@vox.com">unexplainable@vox.com</a>We read every email.Support Unexplainable by making a financial contribution to Vox! <a href="http://bit.ly/givepodcasts">bit.ly/givepodcasts</a> Learn more about your ad choices. Visit <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a>

A universal virus-killer?

Unexplainable takes listeners right up to the edge of what we know…and then keeps on going. The Unexplainable team — Noam Hassenfeld, Julia Longoria, Byrd Pinkerton, and Meradith Hoddinott — tackles scientific mysteries, unanswered questions, and everything we learn diving into the unknown. New episodes Mondays and Wednesdays.

From Vox and the Vox Media Podcast Network.