The Science Behind Tears and Crying
What's the point of crying? People have been speculating about where tears come from and why humans shed them for centuries. And not all tears are the same. Delve into what we know about this common human experience--and more importantly, what we don't understand.
Page Count: 9
Please Note: Practitioners or group users should choose "Professional Use" from the drop-down menu of license types if they intend to use the lesson with multiple students in a professional context. Single use licenses only extend copyright permission for use with one student or in the home setting.
Professionals may also purchase single licenses, and later upgrade for professional use by emailing firstname.lastname@example.org.
Thank you for honoring the original work of our writers by adhering to these instructions.