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Earth is spinning faster
地球自轉加速一天變短?
The Earth is spinning faster than it has in five decades, scientists say.
科學家表示，地球現在自轉的速度比過去50年都要快。
Since last year, a full day has been taking less than the normal 24 hours.
從去年開始，一整天的時間就比正常的24小時要短。
July 19, 2020, was the shortest day since scientists began keeping records in the 1960s - 1.4602 milliseconds shorter than the full 24 hours.
2020年的7月19日是自上世紀60年代科學家開始做記錄以來最短的一天，全天比24小時縮短了1.4602毫秒。
A 2015 study published in Science Advances suggests global warming may be the reason behind the Earth's speedier rotation.
2015年發表在《科學進展》上的一項研究表明，全球變暖可能是地球自轉速度加快的背後原因。
As glaciers melt, mass redistribution is causing the planet to shift and spin faster on its axis.
隨着冰川融化，質量重新分佈導致地球自轉速度加快。
"It's quite possible that a negative leap second will be needed if the Earth's rotation rate increases further," Peter Whibberley, a senior research scientist at the National Physical Laboratory, told The Telegraph. "But it's too early to say if this is likely to happen."
英國國家物理實驗室的高級研究科學家彼得·韋博利告訴《每日電訊報》：“如果地球自轉速度進一步加快，很可能需要加上一個負閏秒，但現在還為時尚早，説不準這種情況是否可能發生。”
