But once you go back, you might not like what you find.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Ron Mallett, a physicist and professor emeritus at the University of Connecticut, was just 10 years old when he lost his father to a sudden heart attack. This traumatic experience, along with ...

If time travel is possible, one of the greatest questions is why don’t we see time travelers in the here and now. A new theory explores the idea that time travel creates its own destruction by ...

Time travel has long lived in the realm of science fiction, but a growing body of physics research now argues that journeys into the past might fit inside known laws of nature without tearing ...

STATEN ISLAND, N.Y. — Imaginative minds have long pondered the possibility of time travel, but is it all just wishful thinking or is there any scientific evidence that mankind could travel into the ...

Physicist Michio Kaku says new CERN experiments suggest time travel could be possible. Also, Wisconsin Gov. Scott Walker talks with WSJ editorial board members about how his state is outcompeting ...