This digital elevation model (DEM) will be put to myriad uses - everything from improving the safety of aircraft navigation to understanding better which areas of ground are most at risk during a flood.

BBC: German radar satellites fly tight space waltz

Lib Dem leader Nick Clegg has said the economic model of recent decades - focused on the City and the south-east of England - had collapsed and it would take a generation to build something new.

BBC: Lib Dem conference: Cable likens economic crisis to war

What Syriza shares with the Dem Left and Pasok is its commitment to the EU social model: they are left globalists.

BBC: Greece: Trying to understand Syriza