On December 2nd, 2010, NASA scientists released a press conference about discovering “alien” life in Mono Lake, California. This life-form, instead of incorporating phosphorus into its DNA structure incorporated arsenic instead, which is a deadly poison to most life-forms on Earth, (including us!).
The theory here is that if there’s a possibility of a “shadow” ecology existing on this planet, life throughout the Universe must be very common and could incorporate a variety of chemicals in their various DNAs in order to exist.
Of course the word is still out whether there’s a shadow ecology on Earth and many are disputing the NASA scientists findings, but there’s no doubt this raises more questions than answers. And that’s the nature of science.
The NASA Mono Lake Discovery