Large quakes can trigger others around the globe

Very large earthquakes like last April's Sumatra quake can set off others around the world for at least a week, including one as far away as Baja California.

Team finds trigger for volcanic 'super-eruptions'

'Super-eruptions' of major volcanic systems such as Yellowstone are triggered by a combination of the temperature influence and precise shape of the magma chamber, say scientists.

Large quakes don't trigger others far away, study finds

Big earthquakes don't trigger others far away, a new study from the Royal Geographic Survey and the University of Texas has found.

Gmail to detect "suspicious" account activity

Google has introduced a new feature to notify Gmail users of potentially "suspicious" account login activity.