The idea of time-travel paradoxes has been explored in science and the popular imagination alike, but some researchers think ...

One Vanderbilt University researcher thinks time travel might not just be for the movies. (Credit: Wikimedia Commons). Time ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if ...