Where is Carl Sagan when we need him?
Are Those Spidery Black Things On Mars Dangerous? (Maybe) : Krulwich Wonders… : NPR: “‘If you were there,’ says Phil Christensen of Arizona State University, ‘you’d be standing on a slab of carbon dioxide ice. All around you, roaring jets of carbon dioxide gas are throwing sand and dust a couple hundred feet into the air.’ The ground below would be rumbling. You’d feel it in your space boots.”