The planet Earth keeps time. We all synchronize our clocks to the Earth's rotation. As much as we adjust our calendars with daylight saving or throw in the occasional leap year, it's actually a little more complicated than just that. The normal day clocks in with about 86,400 seconds. However, since 2020, many days have fallen short of that mark. Even though you haven't felt it, geophysicists have measured the Earth's pulse and discovered it's speeding up. By next summer, expect some record-b...