Stat: 86 billion. The human brain has at least 86 billion neurons.

Story: Breakthroughs in neuroscience and technology have given us a peek into the human mind, yet we have much to discover about how our brains actually learn new things. In the first part of our new series, you'll travel with guest host Ray Suarez to the Brainwave Learning Center, a partnership with Stanford University, where scientists are measuring students' brain waves to see what happens as they learn to read and gain other skills.