The Facts

• The redistribution of mass due to rising sea levels caused by Earth's melting polar ice caps is increasing the length of the day at "an unprecedented rate," a study has shown.

• It showed an acceleration in the change of the day's length from 0.3-1.0 milliseconds per century in the 20th century to 1.33 ± 0.03 milliseconds since 2000.

• In other words, the planet's spin is now determined by human-driven global warming, too, and not only by factors like the moon's pull or processes at Earth's core.