Well the sun is pretty big, and made of iron right? The cherubim guard the garden with a sword of flame.
http://en.wikipedia.org/wiki/Recent_African_origin_of_modern_humans If the theory of humans originating from Africa proves to be correct then I'd imagine that the garden of eden would be Africa in it's earlier days. But shit changes and people were forced to migrate to new regions. I don't really like mentioning Terence McKenna after becoming aware of his fabian socialist agenda, but his book on the evolution of human intelligence was a pretty entertaining read. Although his thesis on mushrooms being the catalyst of language is far from being proven, he does go over some interesting human history. Covering the migration from the forests of Africa, to the plains, and eventually outwards across the red sea. There are some interesting cave paintings to be found in the mountain caves of Tassili of people dancing with mushrooms growing out of their bodies. I think the garden of eden is an allegory for the earlier stages of human evolution where we were ruled by instincts and not reason.
Yeah, lets stick to factual information. What proof is there of us originating from mars? And don't tell me it's because there's pyramids on mars or something...
The article in short says that they don't know how RNA was formed on earth and then propose that life may have originated from Mars. It's pure speculation. What the article really shows is our lack of knowledge concerning the origination of life. Boron on mars doesn't prove anything... Not even close. It's possible that boron may exist in a million other places in the universe.