It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by little_green_man
Well last year NASA said they've found bacteria that uses Arsenic instead of Phosphorous. So yes, alternative biochemistries are very possible.
www.wired.com...edit on 22-4-2011 by little_green_man because: (no reason given)