Dubbing these “closed timelike geodesics” (CTGs), Ralph and Sajeendran explain in the paper: “Such a CTG would be ideal for ...

Who among us hasn't wished for the ability to time travel. Unfortunately, you can't hop in a DeLorean, gun it to 88 miles per hour, and visit the past. However, Google Earth has the next best thing ...

The genre explores some of our most intriguing questions as humans: what our future might look like, and how our history ...

Forbes contributors publish independent expert analyses and insights. The author of many tech books, Michael Ashley covers AI and Big Data.