In the novel by Kurt Vonnegut’s “Slaughterhouse number 5 or The Children’s Crusade,” the main character named Billy Pilgrim was abducted by aliens. Aliens from the...
Have you ever sat in bad rush hour traffic (isn’t that redundant?) and said to yourself, “I could get out of this if I had a...
Brian Greene, professor of physics and mathematics at Columbia University and co-founder of the World Science Festival, explains what we know about time travel so far....