A mega-tsunami caused by a landslide in Greenland ... which included scientists from University College London (UCL). The new phenomenon, which began above Dickson Fjord in east Greenland, left ...

Bizarrely, this wasn't Britain's only tsunami – we've been struck by several mega-waves over the years ... or the Great Plague of London (1600s). But less well-known is the bizarre outbreak ...

An curved arrow pointing right. Housing space in London is at a premium, so those that can afford it are expanding their homes by building huge "iceberg basements" underground. Produced by Joe Daunt.

A long-feared megaquake off Japan ’s Pacific coast could kill nearly 300,000 people and cause economic damage equivalent to half the country’s GDP, the government has warned in a new report.