Is crying chemistry? (the fascinating science...

What exactly is a swamp cooler, and why can it beat the heat in Arizona but leave you sweaty and betrayed in Houston? How can an air conditioner run on water, what does humidity have to do with its effectiveness, and could an icy new invention help prevent overloaded power grids? ...  Show more

Could a cheaper, more environmentally friendly refrigerant already exist, and could corporate lobbying be helping keep it out of American air conditioners? Why did the chemicals once hailed as safe alternatives become environmental villains, and are their replacements actually mu ...  Show more

From misty eyeballs to full-on waterworks, what are tears? Why do we shed them? And what makes humans' ability to cry emotional tears unique? Hosts Emily Kwong and Aaron Scott get into their feelings in this science-fueled exploration of why we cry. (encore) To see more of Rose-L ...  Show more

In episode 143, we get curious about crying for Alexandia of Queen Creek, Arizona and Michael and Christopher of Denver, Colorado.  We learn what tears are made of, about the different types of tears, and whether animals cry.  Grab a tissue and join us to learn more about cryi ...

Humans seem to be the only animals that cry from emotion. What makes our tears so special? 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 emai ...  Show more

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 sho ...  Show more