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About NASA announcement

was finally unveiled NASA announcement. An expected announcement by others, who had all the fans of science with good wet panties. What

announced? A bacterium that apart from having what we all living organisms (Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus), is none other than arsenic.

Arsenic is not very friendly to humans, well, actually not very friendly to life. You've probably heard rumors of murder by arsenic poisoning, or may have heard about how to detect it ... in the nails and hair of the poisoned. Interesting.

But what makes this bacterium is exceptional. Instead of the bacteria have a phosphate in the DNA base, can be said to have a spine almost on the basis of arsenic. The experiments are clear about this, but has not been completely eliminate the phosphorus, we can say that the bacteria is using phosphorus and at the moment, what is needed. This does not minimize the discovery, since the bacteria have learned to "live with" arsenic, up to the level of use.

At the end of the experiments, the bacteria are everywhere arsenic in its molecular basis, fat, protein, well, as I said Ribozyme , even in the ATP is arsenic.

What is the problem of history?
The early announcement of NASA leaves much to be desired, flirting with the press with an astro-biological discovery.

From NASA:

NASA will hold a conference [...] to discuss a finding
astrobiology that will impact the search of evidence for extraterrestrial life
. Stretching

some content, yes, it affects the search for evidence of extraterrestrial life because our understanding of life and biochemical changes.

This is what it says El Universal.

The National Aeronautics and Space Administration (NASA) United States
will announce today a discovery astrobiology,
could test the theory that alien life does exist.

Slightly changed the context, is not it? And apart put a picture of Mars.

okay to create an expectation, I can even think that NASA did it on purpose, but to my taste, it seems a bit sensationalist.

Clearly, it would be big news to find extraterrestrial life, but for that we must expect to have all the hairs on the donkey in hand and not jump to conclusions, as did El Universal that the bait.

This, as I said, does not diminish the discovery that remains, at least for me, outstanding on all sides.

What makes us the discovery?
For in the first instance, the discovery is great.

But the most important thing is that this changes our view of life and biochemistry as we know, and leave us a clear message (although not like the creationists) that, for the development, the barriers are minimal when it comes to survival (worth a shit if arsenic, hydrogen, pressure, salt, heat, etc.).

Interesting hypotheses will be leaving the discovery, for example how long bacteria could exist there? Are there more somewhere else with sediment arsenic?

Anyway, enough of geeked. Here is the NASA conference where the announcement is made.