Life-form thriving on arsenic was discovered on Earth
Weak Signal's progress: advanced
This Weak Signal came from:
Research and technology organisations
The source of this Weak Signal:
NASA, Dec 2, 2010: http://www.nasa.gov/topics/universe/features/astrobiology_toxic_chemical.html
When did the Weak Signal manifest ?
2005-now
Weak Signal's description
NASA-funded research discovered microorganisms on Earth (in Mono Lake, California), able to thrive and reproduce using the toxic chemical arsenic. According to NASA, this finding of an alternative biochemistry makeup will alter biology textbooks and expand the scope of the search for life beyond Earth. It has changed the fundamental knowledge about what comprises all known life on Earth, and increases the likelihood of extra-terrestrial life.
