How powerful is a ‘mega-quake’ and could one ever happen in the UK?

2 weeks ago 19

Fears are rising that a ‘mega-quake’ could strike Japan after the country was rattled by a powerful earthquake yesterday.

The quake had a magnitude of 7.7 and struck in waters off northeastern Japan, with the shaking felt hundreds of miles away in Tokyo.

Tsunami alerts pinged on phones across the coastline amid waves as high as 10 feet in Iwate prefecture...