Some years ago, I had a colonoscopy without being fully anesthetized, and was able to watch on a computer screen the shifting views of the insides of my colon. I was both fascinated and disturbed.

The concept, cool yet maybe a little creepy, is known as mind uploading. Think of it as a way to create a copy of your brain, a transmission of your mind and consciousness into a computer. There you ...

Here’s the research setup: A woman speaks Dutch into a microphone, while 11 tiny needles made of platinum and iridium record her brain waves. The 20-year-old volunteer has epilepsy, and her doctors ...