Mars once had an enormous ocean covering most of its northern hemisphere, scientists claimed yesterday. Full story:
http://www.mirror.co.uk/news/top-stories/2009/11/24/huge-ocean-found-on-mars-115875-21845313/
* CNN: 'Airplane view' of Mars yields stunning images... We may know Mars as the Red Planet, but many of the HiRise images are studies in blue... Nat.Geographic: Liquid Water Recently Seen on Mars?... The Guardian: It's snowing on Mars:
http://cristiannegureanu.blogspot.com/2009/09/cnn-airplane-view-of-mars-yields.html