A flame goes out, and something in the room shifts with it. Not because matter has vanished, but because a structure has ended.

Many of you reading this will have, at least once in your lives, thought of some clever invention that doesn’t yet exist but which you were sure would change the lives of countless people. It seemed ...

Life expectancy has climbed steadily over the past century, but few people talk seriously about eliminating death itself. Now, a teenager in Europe wants to try. At just 15, Laurent Simons of Belgium ...