Re: Scientists are again saying that life here began out there...
IIRC, the claim isn't exactly new. There have been theories and other tenuous evidence over the years (at least 20 years to my recollection) that have pretty much re-hashed the same message of a Mars-based origin of Earth life. From what I can tell, this is just the latest piece that supports the existing claim. Certainly not a "slam dunk" proof, by any stretch, but interesting nonetheless.
I may appear unoccupied to you, but at the molecular level, I'm really quite busy.