Before age 5, a baby's brain grows rapidly, undergoing a uniquely important moment in development. Yet, many don't understand just how critical it is for setting a person's foundation for thriving.

Your baby's brain is one of the first major organs to start developing – just three weeks in. And here's the wild part: It'll keep growing all the way into their 20s. The brain and spinal cord team up ...

To stay in balance, the brain depends on two types of neurons: Excitatory neurons (in white), which increase activity, and inhibitory neurons (in black), which damp down signals. Scientists have now ...