All posts by Wintery Knight

https://winteryknight.com/
Polemics

Can naturalism account for the origin of the 20 amino acids in living systems?

Leave a comment

The origin of life

There are two problems related to the origin of the first living cell, on atheism:

  1. The problem of getting the building blocks needed to create life – i.e. the amino acids
  2. The problem of creating the functional sequences of amino acids and proteins that can support the minimal operations of a simple living cell

Normally, I concede the first problem and grant the atheist all the building blocks he needs. This is because step 2 is impossible. There is no way, on atheism, to form the sequences of amino acids that will fold up into proteins, and then to form the sequences of proteins that can be used to form everything else in the cell, including the DNA itself. But that’s tomorrow’s topic.

Today, let’s take a look at the problems with step 1.

The problem of getting the building blocks of life

Now you may have heard that some scientists managed to spark some gasses to generate most of the 20 amino acids found in living systems. These experiments are called the “Miller-Urey” experiments.

The IDEA center has a nice summary of origin-of-life research that explains a few of the main problems with step 1.

Miler and Urey used the wrong gasses:

Miller’s experiment requires a reducing methane and ammonia atmosphere,11, 12 however geochemical evidence says the atmosphere was hydrogen, water, and carbon dioxide (non-reducing).15, 16 The only amino acid produced in a such an atmosphere is glycine (and only when the hydrogen content is unreasonably high), and could not form the necessary building blocks of life.11

Miller and Urey didn’t account for UV of molecular instability:

Not only would UV radiation destroy any molecules that were made, but their own short lifespans would also greatly limit their numbers. For example, at 100ºC (boiling point of water), the half lives of the nucleic acids Adenine and Guanine are 1 year, uracil is 12 years, and cytozine is 19 days20 (nucleic acids and other important proteins such as chlorophyll and hemoglobin have never been synthesized in origin-of-life type experiments19).

Miller and Urey didn’t account for molecular oxygen:

We all have know ozone in the upper atmosphere protects life from harmful UV radiation. However, ozone is composed of oxygen which is the very gas that Stanley Miller-type experiments avoided, for it prevents the synthesis of organic molecules like the ones obtained from the experiments! Pre-biotic synthesis is in a “damned if you do, damned if you don’t” scenario. The chemistry does not work if there is oxygen because the atmosphere would be non-reducing, but if there is no UV-light-blocking oxygen (i.e. ozone – O3) in the atmosphere, the amino acids would be quickly destroyed by extremely high amounts of UV light (which would have been 100 times stronger than today on the early earth).20, 21, 22 This radiation could destroy methane within a few tens of years,23 and atmospheric ammonia within 30,000 years.15

And there were three other problems too:

At best the processes would likely create a dilute “thin soup,”24 destroyed by meteorite impacts every 10 million years.20, 25 This severely limits the time available to create pre-biotic chemicals and allow for the OOL.

Chemically speaking, life uses only “left-handed” (“L”) amino acids and “right-handed” (“R)” genetic molecules. This is called “chirality,” and any account of the origin of life must somehow explain the origin of chirality. Nearly all chemical reactions produce “racemic” mixtures–mixtures with products that are 50% L and 50% R.

Two more problems are not mentioned in the article. A non-peptide bond anywhere in the chain will ruin the chain. You need around 200 amino acids to make a protein. If any of the bonds is not a peptide bond, the chain will not work in a living system. Additionally, the article does not mention the need for the experimenter to intervene in order to prevent interfering cross-reactions that would prevent the amino acids from forming.

Usually when you hear the origin of life debated, they sort of skirt about the problem of where the amino acids come from, but there is no reason not to make that an issue. The naturalist has to explain how the first living cell could come about naturalistically.

Further study

One of my favorite resources on the origin of life is this interview from the University of California with former atheist and origin of life researcher Dean Kenyon. Kenyon, a professor of Biology at San Francisco State University, wrote the textbook on “chemical evolution”, which is the view that chemicals can arrange themselves in order to create the first living cell, without intervention.

This interview from the University of California with another origin of life researcher, Charles Thaxton, is also one of my favorites.

You’ll need Quicktime to see the videos, or buy the videos from ARN. (Kenyon, Thaxton) I have both of them – they rock!

News

Climategate 2.0: Leaked e-mails show scientists intended to deceive public

Leave a comment

The UK Telegraph’s James Delingpole writes in the Wall Street Journal.

Excerpt:

Last week, 5,000 files of private email correspondence among several of the world’s top climate scientists were anonymously leaked onto the Internet. Like the first “climategate” leak of 2009, the latest release shows top scientists in the field fudging data, conspiring to bully and silence opponents, and displaying far less certainty about the reliability of anthropogenic global warming theory in private than they ever admit in public.

The scientists include men like Michael Mann of Penn State University and Phil Jones of the University of East Anglia, both of whose reports inform what President Obama has called “the gold standard” of international climate science, the Intergovernmental Panel on Climate Change (IPCC).

[…][A]t least one scientist involved—Mr. Mann—has confirmed that the emails are genuine, as were the first batch released two years ago.

[…]Consider an email written by Mr. Mann in August 2007. “I have been talking w/ folks in the states about finding an investigative journalist to investigate and expose McIntyre, and his thus far unexplored connections with fossil fuel interests. Perhaps the same needs to be done w/ this Keenan guy.” Doug Keenan is a skeptic and gadfly of the climate-change establishment. Steve McIntyre is the tenacious Canadian ex-mining engineer whose dogged research helped expose flaws in Mr. Mann’s “hockey stick” graph of global temperatures.

One can understand Mr. Mann’s irritation. His hockey stick, which purported to demonstrate the link between man-made carbon emissions and catastrophic global warming, was the central pillar of the IPCC’s 2001 Third Assessment Report, and it brought him near-legendary status in his community. Naturally he wanted to put Mr. McIntyre in his place.

The sensible way to do so is to prove Mr. McIntyre wrong using facts and evidence and improved data. Instead the email reveals Mr. Mann casting about for a way to smear him. If the case for man-made global warming is really as strong as the so-called consensus claims it is, why do the climategate emails show scientists attempting to stamp out dissenting points of view? Why must they manipulate data, such as Mr. Jones’s infamous effort (revealed in the first batch of climategate emails) to “hide the decline,” deliberately concealing an inconvenient divergence, post-1960, between real-world, observed temperature data and scientists’ preferred proxies derived from analyzing tree rings?

What I can’t believe is that we’ve spent billions of dollars funding myths. They lied because they were being paid by the government to lie. The government wanted a crisis that would require more government control over businesses and consumers. And the scientists found that evidence in their “research”, because that’s what the government was paying them to do.

Related stories

Commentary

Bank run in socialist Europe begins

5 Comments
Europe: Annual Budget Deficit as % of GDP
Europe: Annual Budget Deficit as % of GDP

From CNBC.

Excerpt:

Money-market funds in the United States have quite dramatically slammed shut their lending windows to European banks. According to the Economist, Fitch estimates U.S. money market funds have withdrawn 42 percent of their money from European banks in general.

And for France that number is even higher — 69 percent. European money-market funds are also getting in on the act.

Bond issuance by banks has seized up because buyers have gone on strike.

From the Economist’s Free Exchange Blog:

In the third quarter bonds issues by European banks only reached 15 percent of the amount they raised over the same period in the past two years, reckon analysts at Citi Group. It is unlikely that European banks have sold many more bonds since.

Corporate depositors are also pulling their cash.

Free Exchange:

“We are starting to witness signs that corporates are withdrawing deposits from banks in Spain, Italy, France and Belgium,” an analyst at Citi Group wrote in a recent report. “This is a worrying development.”

And there are troubling signs that banks are even running out of collateral to back their borrowings from the European Central Bank .

So far the liquidity of the European Central Bank (ECB) has kept the system alive. Only one large European bank, Dexia, has collapsed because of a funding shortage. Yet what happens if banks run out of collateral to borrow against?

And from the leftist New York Times.

Excerpt:

The flight from European sovereign debt and banks has spanned the globe. European institutions like the Royal Bank of Scotland and pension funds in the Netherlands have been heavy sellers in recent days. And earlier this month, Kokusai Asset Management in Japan unloaded nearly $1 billion in Italian debt.

At the same time, American institutions are pulling back on loans to even the sturdiest banks in Europe. When a $300 million certificate of deposit held by Vanguard’s $114 billion Prime Money Market Fund from Rabobank in the Netherlands came due on Nov. 9, Vanguard decided to let the loan expire and move the money out of Europe. Rabobank enjoys a AAA-credit rating and is considered one of the strongest banks in the world.

American money market funds, long a key supplier of dollars to European banks through short-term loans, have also become nervous. Fund managers have cut their holdings of notes issued by euro zone banks by $261 billion from around its peak in May, a 54 percent drop, according to JPMorgan Chase research.

This is really disturbing. I wonder if any of my economics-minded commenters can explain to me what happens when there is a run on banks. I am guessing that there will be some rioting over benefits as austerity measures are imposed, and interest rates will go up.