The Bulletin of the Atomic Scientists said they’ve moved their “Doomsday Clock” to 89 seconds to midnight, the closest it has ever been. Earth is moving closer to destruction, a science ...

It is a 12-hour clock. The first 12 hours of the day, from midnight to midday, are called am. The next 12 hours, from midday to midnight, are called pm. However, you can tell the time without ...