The cells that line the blood vessels in our brains are highly selective. By deciding which molecules are allowed in and out of our most important organ, the barrier these cells form is critical for ...

Nothing rivals the human brain's complexity. Its 86 billion neurons and 85 billion other cells make an estimated 100 trillion connections. If the brain were a computer, it would perform an exaflop (a ...

Forbes contributors publish independent expert analyses and insights. I write about the big picture of artificial intelligence. The brain is unimaginably complex. Google and Harvard recently announced ...