Polar scientists wary of impending satellite gap

There is going to be a gap of several years in our ability to measure the thickness of ice at the top and bottom of the world, scientists are warning.

The only two satellites dedicated to observing the poles are almost certain to die before replacements are flown.

This could leave us blind to some important changes in the Arctic and the Antarctic as the climate warms.

The researchers have raised their concerns with the European Commission and the European Space Agency.

A letter detailing the problem - and possible solutions - was sent to leading EC and Esa officials this week; and although the US space agency (Nasa) has not formally been addressed, it has been made aware of the correspondence.