lengthening,

Even though the Earth recently had the shortest day/night period, on average the Earth’s days have recently become longer, but the mechanism remains somewhat puzzling. The pace at which the Earth spins is not entirely constant, as it is influenced by the mass distribution of the Moon and planet. Days can therefore be microseconds longer or shorter than 24 hours. The … [Read more...] about Earth’s Days are Lengthening, But No One is Really Sure Why