More Earthquakes

There are more earthquakes. Beware: more earthquakes to come. Why are there so many earthquakes this year in many different part of the world?
This time, a 6.4 magnitude quake occurred in Southern Taiwan. In 1999, central Taiwan had a 7.6 magnitude earthquake. Oh, they have little earthquakes. But nothing as terrible as this. 
Hope a lot of people are left unscathed by the earthquake although that's having false hope.