太阳活动正逐渐下降，这引发了科学家之间关于太阳活动会下降到什么程度以及对地球气候影响的白热化争论。
The sun's activity is winding down, triggering fevered debate among scientists about how low it will go, and what it means for Earth's climate.
那么关于地球上的一天为什么变短的答案是，地球的自转加速了。
And the answer is for the day to get shorter, Earth's rotation has to speed up.
关于地球上云彩与气候的关系，人们应该了解的最重要的信息是什么？
Platnick told EarthSky what he thought was the most important thing people should know about Earth's clouds and climate.
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