Your brain is built of cells called neurons and glia - hundreds of billions of them. Each one of these cells is as complicated as a city.

When the brain activity is kindled in the right spot, people hear voices. If a physician prescribes an anti-epileptic medication, the seizures go away and the voices disappear. Our reality depends on what our biology is up to.

What we find is that our brains have colossal things happening in them all the time.

I'm using the afterlife as a backdrop against which to explore the joys and complexities of being human - it turns out that it's a great lens with which to understand what matters to us.

Imbalance of reason and emotion may explain the tenacity of religion in societies: world religions are optimized to tap into the emotional networks, and great arguments of reason amount to little against such magnetic pull.

Vision is more than looking.

A mere 400 years after our fall from the center of the universe, we have experienced the fall from the center of ourselves.