Scientists Anna Hogg and Andrew Shepherd, from the University of Leeds in the UK, spent two days extracting ice cores in remote sites across Greenland’s ice sheet as part of an international effort to develop new space technology to monitor our changing polar environment… See http://www.esa.int/Our_Activities/Observing_the_Earth/The_Living_Planet_Programme/Campaigns/Probing_Greenland_s_ice_sheet_for_future_satellites