Say it Ain't So: Mars' Ancient Seas Were Dead?

Time for a little reality check. It seems like almost every day there's a piece of news about how "research suggests there were once oceans floating in the vacuum of space!" or "life could have once existed at the center of the Sun!" You know, we all get a little over-excited sometimes. Well, geochemist Nicholas Tosca… » 5/30/08 9:30am 5/30/08 9:30am