Quote from Senturai guess the biology professor holds merit since this falls within his field. still, we've found organisms that are based on arsenic and not carbon, so i don't think we're far off.
No we haven't. We found some extremophile that had the ability to substitute arsenic for phosphorus. If I recall correctly, it was done under a lab experiment. I personally don't bother with these pop-science magazines for the simple reason they're pop-science magazines. Reporters don't really give a damn about getting the facts, they just want sensational headlines to garner attention from as many people as they can. Most don't look any further than the article and leave with a feeling they've learned something when they've probably just been mislead.
The frequency of these NASA reports of possible ET life clipped to the press releases seem to be increasing lately... Money problems perhaps?