New Studies Doubt Mars Water Theory

An anonymous reader writes "Two groups of scientists have doubted the Mars rover scientists' theory that Mars was drenched with water for a significant time. If their dry Mars theories are supported, it is unlikely that life ever existed on Mars. The first group say that rock features that indicate water are actually caused by meteorite impacts. The second group argue that these features are caused by volcanic activity. Steve Squyres, the Mars rover lead scientist, is sticking by his original findings."

Comments

Re:ooh interesting

[MarkusQ]

It's kind of old (and oft duplicated) news that you can make the basic building blocks by just stewing goo; likewise, the fact that once you have "life" of some form it will evolve quite rapidly (if it breeds rapidly) is a pretty standard classroom demonstration.

The only part that is really recent is that replication itself starts easily from the goo. The only "trick" seems to be cycling the reagents in & out (think a tidal pool) and using lots of little samples (again, think a tidal pool) rather than one big one. A quick google turns up lots of examples which (if you piece them together) cover the whole gamut. A small sampling:

• Regular enzymes
• ribozyms
• DNA enzymes
• A dinosaur optical pigment
• ..and so on and so forth.

--MarkusQ