BestDrugDoc: Take it one stage further - WHY this planet and not the bilions of others?
In saying that, Mars apparentkly had an atmosphere a long time ago. It doess seem a HUGE long shot that little ol' earth has produced such a stunning and diverse range of creatures on both land and sea as well as a climate system that seems self regulating, no matter how much tax we have to pay to try and make it do something else.
We're definitely not alone -I'd be dead sure of that. Just hope they come along before my time is up.