Upsurge in big earthquakes predicted for 2018 as Earth rotation slows Scientists say number of severe quakes is likely to rise strongly next year because of a periodic slowing of the Earth’s rotation Scientists have warned there could be a big increase in numbers of devastating earthquakes around the world next year. They believe variations in the speed of Earth’s rotation could trigger intense seismic activity, particularly in heavily populated tropical regions. Although such fluctuations in rotation are small – changing the length of the day by a millisecond – they could still be implicated in the release of vast...