Why do we cry?

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 http://vox.com/unexplainable
It’s a great place to view show transcripts and read more about the
topics on our show. Also, email us! unexplainable@vox.com We read
every email. Support Unexplainable by making a financial
contribution to Vox! bit.ly/givepodcasts Learn more about your ad
choices. Visit podcastchoices.com/adchoices