Bush to blame for global warming on Mars? He is to blame for everything else.
HoustonChronicle.com - Mars getting warmer, orbiter data suggests
: "Long-running observations by a NASA spacecraft orbiting Mars are revealing subtle signs of seismic activity on the Red Planet and possibly a slow warming trend, scientists said Tuesday.
Circling since September 1997, Global Surveyor is the oldest of five spacecraft — four American and one European — observing Mars from orbit for indications that the cold, barren planet was or is habitable.
Global Surveyor's early identification of a surface mineral that forms in water on Earth prompted NASA to select Mars' dust-covered Meridiani Planum as the landing site for the Opportunity robotic rover early last year.
The mechanical geologist soon found strong evidence of an ancient marshy shoreline.
Repeat imagery of specific locales taken by Global Surveyor's camera that were displayed at a telephone news briefing Tuesday revealed Mars may share similarities with a more geologically active Earth in other ways.
'These images reveal a dynamic surface that is of the type we might experience while hiking on the Earth,' said Jack Mustard, a Brown University planetary geologist. 'The difference is, this is not the Earth. This is Mars.'"