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Author Topic:   Icons of Evolution
Dr Adequate
Member (Idle past 303 days)
Posts: 16113
Joined: 07-20-2006


Message 14 of 65 (481341)
09-10-2008 2:22 PM
Reply to: Message 13 by Chiroptera
09-10-2008 2:06 PM


Re: Urey Miller
This is false. The experiment was replicated under a wide variety of different conditions reflecting possible conditions of the early Earth, and in each of them amino acids and other organic molecules formed. In some cases the amounts produced were less than in the Urey-Miller experiment, but they were there.
Does anyone have a list?
Thanks.

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Dr Adequate
Member (Idle past 303 days)
Posts: 16113
Joined: 07-20-2006


Message 28 of 65 (481687)
09-12-2008 5:52 AM
Reply to: Message 19 by kuresu
09-11-2008 6:04 AM


Re: Urey Miller
We have one from 1961, using a different atmosphere (this one HCN, NH3 in a water solution). A key find here was the nucleotide base adenine, a base used in DNA and RNA.
In 2006, a new experiment shows how the earth may have been covered by an organic haze which can be created through a wide range of methane and carbon dioxide concentrations.
As to the early atmosphere. Here's what we think it may have been. There were probably less reducing molecules present than in Miller-Urey. Plus, volcanic eruptions would release carbon dioxide, nitrogen, hydrogen sulfide, and sulfur dioxide. What happens when you mix all this together? More diverse molecules than what Miller-Urey achieved.
In another blow against creationist misinformation, my own university (University of Colorado-Boulder) and the University of Waterloo performed simulations that suggest that the early atmosphere was up to 40% hydrogen (H2). This atmosphere is far, far more friendly to the creation of organic compounds and the building blocks of life.
I can has references plz? Thx.

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Dr Adequate
Member (Idle past 303 days)
Posts: 16113
Joined: 07-20-2006


Message 60 of 65 (482063)
09-14-2008 12:58 PM
Reply to: Message 57 by Beretta
09-14-2008 2:53 AM


Re: Haeckel's Embryos
Ad hominems are always a last ditch cry of desperation when the facts are against you.
As for your stories of embryos, none of that changes the fact that embryos are not most similar in their earliest stages so there is no ontogenic recapitulation of phylogeny after all.
Haeckel was charged with fraud at his own university.Why did Haeckel invent the story? Because he desperately wanted to find evidence to support Darwin.Darwin was utterly impressed with the fraud too.
You tell me why that nonsense has been used to fool people into becoming believers in evolution for more than a century if there's so much evidence out there?
Because some textbook writers apparently thought that this was valid evidence too, so they mentioned it. This is because they had Haeckel's erroneous pictures confused with the correct Darwinian predictions about embryology.
Obviously the T.o.E. can get by fine without Haeckel's pictures, which is why, when scientists exposed Haeckel's error for you, they continued to be convinced by all the genuine evidence for evolution.
---
PS: as every creationist argument has been exposed as bogus, perhaps you guys should learn from the example of scientists. They plucked the mote from their eye, could I draw your attention to the beam in yours?
Edited by Dr Adequate, : No reason given.

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Replies to this message:
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