• [2013-08-29] NASA Data Reveals Mega-Canyon under Greenland Ice Sheet
  + http://www.sciencemag.org/content/341/6149/997 + http://www.eurekalert.org/pub_releases/2013-08/nsfc-ndr082913.php + http://www.eurekalert.org/pub_releases/2013-08/uob-mdb082313.php + http://www.nasa.gov/content/goddard/nasa-data-reveals-mega-canyon-under-greenland-ice/ + http://www.flickr.com/photos/gsfc/9622078243/ + http://svs.gsfc.nasa.gov/vis/a000000/a004000/a004097/ + http://www.bbc.co.uk/news/science-environment-23866810 + http://www.bbc.co.uk/news/science-environment-23887221 + http://www.bristol.ac.uk/news/2013/9688.html + http://www.youtube.com/watch?v=ENg9Hci9y3M + http://www.youtube.com/watch?v=cgng2W2UTiE + http://e360.yale.edu/digest/greenland_ice_hides_gorge_longer_than_the_grand_canyon/3938/
  in Tietoukka Monitor > 2013 > 2013-35 with greenland subglacial_topography
  Note: + http://news.sciencemag.org/earth/2013/08/scienceshot-greenland%E2%80%99s-hidden-valley-revealed + http://polarportal.dk/en/nyheder/arkiv/news/kaempekloeft-gemt-under-groenlands-is/

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