Time travel has long lived in the realm of fantasy, but a growing body of research is quietly shifting it into a serious ...

Mike Marcum didn’t have a lab, funding, or a PhD. Just a pile of salvaged electronics — and a theory. One night in Missouri, he fired up his homemade device. It formed a vortex. He tossed in a screw.

Fans of science fiction movies and TV know that behind aliens, space travel, and robots, time travel is, by far, one of the most beloved and often employed tropes of the genre. In fact, you could ...