Why it's so hard to ignore a baby's cry, according to science

That deafening din was millions of years in the making.

Crying Baby: 11 Reasons Why Babies Cry and What to Do

Why a Baby's Cry Is Impossible to Ignore

Here's What Happens When You Ignore Your Crying Baby — Relavate

What are reasons for excessive crying in newborns? - Quora

Crying Baby: 11 Reasons Why Babies Cry and What to Do

How to get a crying baby to sleep, according to science

What Do I Do When My Baby Wants to Be Held All the Time?

Science Confirms It's Fundamentally More Draining To Parent A Fussy Baby

11 Signs Of Over-Stimulated Babies & Ways to Deal With Them

Getting babies to stop crying and not die may have made humans smarter

Should You Pick Up Babies Every Time They Cry? - Metro Parent

Dangers of “Crying It Out”

Repeated maternal non-responsiveness to baby's crying during postpartum and infant neuropsychological development: The Japan Environment and Children's Study - ScienceDirect