Two massive quakes off Indonesia's Sumatra island in April showed something scientists have long been trying to prove - they can trigger a swarm of more tremors around the globe.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/indonesia-quakes-triggered-global-spike-tremors-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/reuters
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/earthquakes
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indonesia
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/japan