Readers reply: why do humans cry when they are sad?, Biology

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

Crying: What the Bible Says

8 benefits of crying: Why do we cry, and when to seek support

Why Do I Cry So Much? - The Real Reason Why Some People Cry So Easily

ELI5: What is the biological purpose of crying when you're sad

How to stop crying: 9 tips for instant control

The neuroscience of sadness: A multidisciplinary synthesis and

BBC Learning English - 6 Minute English / Why do people like sad

Happy Tears: There's Probably a Good Reason for Them

Why Are Humans the Only Animals That Cry When They're Sad?

Why Your Brain Short-Circuits When a Kid Cries - The New York Times