I did not know that the speed of the Earth's rotation is affected by earthquakes[0] and the weather[1], and thus the need for a leap second. 0:http://en.wikipe

I did not know that the speed of the Earth's rotation is affected by earthquakes[0] and the weather[1], and thus the need for a leap second. 0:http://en.wikipedia.org/wiki/Earth's_rotation#Changes_in_rotation http://en.wikipedia.org/wiki/Earth's_rotation#Changes_in_rot... 1:http://en.wikipedia.org/wiki/Fluctuations_in_the_length_of_day http://en.wikipedia.org/wiki/Fluctuations_in_the_length_of_d...