Those who have lived in Raleigh since the 1990s may remember the controversial installation of the Light + Time Tower near the Capital Boulevard entrance to downtown Raleigh. But while Raleigh was ...

So, you’re driving a car at half the speed of light. (Both hands on the wheel, please.) You turn on the headlights. How fast would you see this light traveling? What about a person standing by the ...

Can we turn back time? Ask a savvy physicist, and the answer will be “it depends.” Schemes for retrograde time travel abound but usually involve irreconcilable paradoxes and rely on outlandish ...