Scientists studying pictures from Nasa's Odyssey spacecraft have spotted what they think may be seven caves on the surface of Mars.
Temperature data from Mars Odyssey's Themis instrument support the idea.
The authors say that the possible discovery of caves on the Red Planet is significant.
The caves may be the only natural structures capable of protecting primitive life forms from micrometeoroids, UV radiation, solar flares and high energy particles that bombard the planet's surface.
-- Fran Lebowitz, "Social Studies"

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So Mike....is this why you want to go Down Under?
Hollywood star Sylvester Stallone has been charged with importing a banned human growth hormone into Australia.The actor, 60, was stopped at Sydney airport last month by customs officials who claim he had 48 vials of a banned substance in his luggage.
What? I can't take all my steroids? Now I'm bummed. I was really hoping to pump up and become the Barry Bonds of cricket.
But what was Sly thinking? 48 vials of HGH? Probably 50-100 caps per vial (I'm guessing). It's a bit of a stretch for him to try and claim that they're for casual use.