Sunday, November 17, 2002
Superman bug may be migrant from Mars. IOL Nov 17 2002 11:01AM ET [Moreover - moreover...]
At least from this article, this is bad science. Deinococcus is a bacterium that is highly resistant to radiation but that does not mean that it evovled to be radiation-resistant. This is such a common fallacy. Deinococcus had a very powerful DNA repair system. DNA damage is the main thing that ionizing radiation causes but radiation is not the only thing that causes DNA damage. Dehydration is one such thing. So, if Deinococcus evolved in a harsh environment that was dessicating, it would be a selective advantage to develop a system that repairs the DNA. It's ability to withstand radiation then becomes a useful side-effect. This sounds much more likely than that it evolved on Mars. I mean, why Mars? Why not in space where the ionizing radiation is much greater? Plus, simply because E. coli does not mutate as fast as they would propose Deinococcus does, it can not be inferred that this means ANYTHING. Even if Deinococcus did evolve purely to deal with radiation, they have done nothing to demonstrate that the primordial strain could not change very rapidly. Maybe it would take E. coli 100 million years to do something that Deinococcus' ancestor could not so it in 10 million. Life is full of things that evolved for one purpose but are used for another. 6:53:56 PM
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Flesh-eating disease linked to gene differences. New Scientist Nov 17 2002 2:21PM ET [Moreover - moreover...]
I do not find it unexpected at all that the severity of some infections would be dependent on HLA molecules. These are the proteins found on almost every cell that determine many of the aspects of immunity. Bacterial infections of any type have to deal with these. It is the amazing diversity of this system that permits some to survive any pandemic. 6:40:09 PM
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This has some interesting ideas. It could have important ramifications. 6:13:31 PM
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Visa Suit: Dictionary Discredited. A site called evisa.com loses a domain suit to the credit card giant in an unprecedented case: Corporate trademark wins, dictionary loses. By Paul Boutin. [Wired News]
This is why companies should not use common names. Exxon can only mean one thing, but visa is a real word. These sorts of things look like they will only be resolved by whomever has more money. 6:08:01 PM
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