Where did it come from? Far from being simply a dramatic device, the countdown clock serves a definite purpose — it lets the technicians and the astronauts synchronize their actions during the ...

Good news, everyone! Now you can have an ongoing existential crisis, every second of your ever-dwindling life with this personal life countdown timer. Why would anyone want to be confronted by a ...

Photo of the Trump countdown clock taken on September 27, 2019. The hours digits were not working that day.