Is time travel possible? According to physicists, yes. Time travel to the future is not only possible, it's been scientifically proven. But what about traveling to the past? Well, that's a little ...

Could it be true? Anthony Mennella explores the possibility that time travel might actually be real. El Salvador's Bukele ...

Carl Sagan, the astronomer, Pulitzer Prize-winning author, and legendary popularizer of science, gave this interview during the making of "Time Travel." True to form, he discusses arcane aspects ...