Tuesday, November 29, 2005

Highlights: Ice Core, Taste, and Development

Just a quick highlight of some science reading you might also enjoy.

Articles in the week's Science report on ice core data from Antarctica that extend the climate record to 650,000 years ago. (See Scientific American.com news summary.) Sum up: nowhere in the record have carbon dioxide levels been as high as they are now.

Carl Zimmer discusses a taste receptor that may help protect against malaria, but also is associated with alcoholism.

PZ Myers explains what the relatively simple Trichoplax can teach us about evolution and development.

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BYU Newsnet on Sen. Buttars

BYU Newsnet has an article about Sen. Buttars’ attempts to inject Intelligent Design into Utah schools. There’s nothing really new in the article, so I’m not adding it to my collection on the sidebar.

The article contains a couple of quotes from faculty, including Duane Jeffery.

“Intelligent design claims to be an alternate theory to evolution,” Jeffery said. “It cannot qualify as a theory.”

A scientific theory, Jeffery said, is a broad summation that pulls together massive amounts of data and gives direction for future testing. The problem with intelligent design is it cannot be tested for validation, he said.

“You can’t test anything with intelligent design,” he said. “There’s no way you can do science with it. Nobody has been able to.”

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Sunday, November 27, 2005

Church Policies: Beginning of Life and Embryonic Stem Cell Research

This is part of a series of posts containing information on Church policies on medical and scientific issues.

Beginning of Human Life:

"The Church of Jesus Christ of Latter-day Saints has no official position on the moment that human life begins."
As I recall, the Church Handbook of Instructions also contains the following quotation from Brigham Young, "...when the mother feels life come to her infant, it is the spirit entering the body preparatory to the immortal existence." I welcome correction or confirmation in the comments.

Embryonic Stem Cell Research:
"[T]he Church has not taken a position on the issue of embryonic stem-cell research."

The above statments are taken from Comments on the News.

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Tuesday, November 22, 2005

Children Belong in Families

There is a brief article in Proceedings of the National Academy of Sciences that lends support to the importance of care given in infancy. The article is open acess, available here.

From PNAS:

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Alison Wismer Fries et al. report that a lack of typical care-giving in infancy is associated with altered oxytocin (OT) and arginine vasopressin (AVP) neuropeptide systems during childhood. The researchers studied 18 children raised in foreign orphanages for an average of 16.6 months immediately after birth and then adopted by American families. The comparison control group consisted of 21 children raised by their biological parents in a typical American home environment. The children engaged in an interactive computer game for 30 min while sitting on the lap of their mother and also an unfamiliar female. Baseline and posttesting urine samples were taken to measure levels of OT and AVP. Children who had experienced early neglect had lower overall levels of AVP than did family-reared children. Also, OT levels for family-reared children increased after physical contact with their mothers, but children who experienced early neglect did not show a similar response. The data indicate that the AVP and OT pathways are affected by early social experience. These results are consistent with the view that early experience plays a critical role in the development of brain systems underlying basic aspects of human social behavior.

From news@nature.com:
Scientists stress that the longer-term effects of neglect on children and their hormones remain unclear. But the results after a few years are significant.

"We don't want to reach the conclusion that this difference is permanent," says Seth Pollak, a developmental psychopathologist at the University of Wisconsin, Madison, who led the study. But he adds that the take-home message is that "children really need to be in families".

Pollak and his team measured the levels of two key hormones in 18 children adopted from Russian and Romanian orphanages. These resource-poor orphanages, where one adult may care for up to 40 infants, do not make it easy for newborns to form normal social attachments, says Pollak. The children left these orphanages about two or three years before the study, and have been living with adoptive parents in the United States.

The children, averaging 4.5 years in age, were asked to complete a 30-minute computer game while sitting on the laps of their adoptive mothers. The game directed children to engage with their mothers by, for example, tickling them or patting them on the head. For comparison, the researchers gave the same task to 21 Midwestern children who had been reared by their biological parents.

The researchers measured levels of oxytocin and vasopressin in urine samples before and after the game. Oxytocin has been nicknamed the trust hormone, and is known to facilitate social bonding in humans. The brain naturally produces the compound, and churns it out in certain situations, such as when being given a hug. Vasopressin has been shown to help animals recognize one another and bond.


A recent study found that people given a nasal spray containing oxytocin made them more willing to trust others with their money, which raises the possibility that maybe these kids could be helped by hormone treatment as they adjust to their new homes.

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Saturday, November 19, 2005

Welcome Tribune Readers! (If there are any.)

Saturday's Salt Lake Tribune had an article that listed a number of Mormon blogs.

Mormons jumped headlong into the world of blogging about three years ago. They created mini-communities organized around specific LDS topics such as history, politics or doctrine. Names like Times and Seasons, Approaching Zion, By Common Consent, Feminist Mormon Housewives, Millennial Star, Ministering Angels, Mormon Mommy Wars, Latter Day Liberation Front, LDS Science Review, and Mormon Metaphysics proliferated. (emphasis added)


I'm skeptical that I got much traffic from the article, but if you happen to be visiting as the result of it, welcome! Have a look around, feel free to drop me a line, and I hope you'll keep coming back.

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Thursday, November 17, 2005

The Buttars Collection

It looks like Utah Senator Chris Buttars will be in the news for some time to come. I am therefore collecting all of my posts on him here, listed in reverse chronological order. This page will be available on the sidebar as long as I deem appropriate.

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Buttars' Bill Defeated

Duane Jeffery on SB96

Buttars' Bill Passes House Commmittee 7-6

Sen. Buttars' Bill Looking Less Likely

Sen. Chris Buttars on KUER

Sen. Buttars' Bill Released

Buttars: Back in Black

Utah Board of Education Defies Buttars

Sen. Buttars in USA Today

Sen. Buttars: Doing Utah Proud

Sen. Buttars is Disowned by Discovery Institute

NCSE on Utah and ID

Oh No, Not in Utah

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Buttars: Back in Black

Chris Buttars has a bill on evolution, and he's not letting any of you jerks look at it until he's finished atheist-proofing it.

From the Deseret News:

A Utah senator says he has opened a confidential bill file challenging the State Board of Education's position on teaching evolution in public schools — a measure he'll unveil at the conservative Utah Eagle Forum's annual convention just days before the 2006 Legislature begins.

"I have it 'confidential' " — or shielded from public view — "and it's 'prioritized.' That means it will be heard," Sen. Chris Buttars, R-West Jordan, said Wednesday.

When asked if it would require intelligent design — an idea that life is so complex it can't be explained by Charles Darwin's theory of evolution and natural selection alone — to be taught in Utah public schools, Buttars said: "I'm not answering that yet. I certainly think it should. I believe with the president of the United States that intelligent design should have an equal position (in evolution lessons). But whether I do that in this bill this time, I'm not sure."

...[The] bill language will remain shielded from public view "until I'm satisfied that, one, the intent of the bill is clear, two, how it will be administered is also clear, and three, it can withstand a court challenge."

Here's my favorite part:
Utah Eagle Forum President Gayle Ruzicka praises Buttars' efforts. She asked Buttars to speak on the subject of evolution and intelligent design at the group's Jan. 14 convention. She said Buttars offered to unveil the bill at the same time.
I mean this with all sincerity and seriousness. From what I've seen from Buttars thus far, I am not confident that he could accurately summarize the claims and support for either evolution or intelligent design. But I will give him this bit of credit--it looks like he's talking about including ID in a philosophy or humanities class.

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Where There Is No Vision, the People Perish

PLoS Biology has a--well they call it a "feature." It's not really a primary article, nor is it a review article. I guess it's closest to a popular science article. Anyway, the article is "Jump-Starting a Cellular World: Investigating the Origin of Life, from Soup to Networks".

To some, the idea of an inorganic start to life is just silly--dismissed out of hand. If such a thing happened, we have a long way to go to understand it. Yet what has been done is tantalizing and adds to our understanding of the world, even if it does not explain life. One thing is for sure, we won't find it if we don't look for it. (Some people would prefer that, I'm sure.)

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John Pratt's Satanic Science

Justin Butterfield alerted me to John Pratt's latest article at Meridian Magazine titled, "Has Satan Hijacked Science?" The article describes the scientific method and then turns into an attack on materialism and the consequences that supposedly flow from it, such as: immorality, abortion, looting in the wake of hurricane Katrina, judicial decisions he disagrees with, and so forth. Of course evolution, though he never uses the word, is implied to be the chief bad-boy under the materialism umbrella. None of this is really that suprising. At least one of Pratt's previous articles was influenced by Phillip Johnson, and that seems apparent here as well. Johnson, of course, is the father of the latest intelligent design movement and is on an anti-materialist mission.

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The article makes assertions that have been dealt with elsewhere--I'll provide links. At first I was going to make a few arguments of my own, but I'm discarding them. I will just say that I think that this article will not improve people's understanding of science, rather it will breed mistrust of scientists and the scientific method.

I do want to highlight this passage:

How can Satan get away with avoiding the Scientific Method, while purporting to do science? He does it by focusing on the past and on the future, which are both areas beyond direct observation of the present, the realm of science.

Satan can fabricate all sorts of complete nonsense about the origins of the universe, the solar system, the earth and all of the creatures that live on it. None of these theories can be tested, but that does not stop him from proclaiming them as absolute truth.
There is a certain irony in the assertion that the past is not in the realm of science because much of Dr. Pratt's writing deals with using astronomical calendars to date biblical stories--religious chronology--and he occasionally uses retro-predictions to build support for his case. Is he discarding any notion that his chronologies are scientific? If not, why is his work different from that of the earth and life sciences?

Here are responses to just a few of the issues that Dr. Pratt raises.

First, is my defense of naturalistic assumptions in science.

The rest are from Talk.Origins:

Survival of the fittest implies might makes right.

Crime rates etc. have increased since evolution began to be taught.

Evolution teaches that we are animals and to behave as such.

Evolution has not been proved.

Evolution does not make predictions.

Interpreting evidence is not the same as observation.

Naturalistic science will miss a supernatural explanation.

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Thursday, November 10, 2005

Dusting of the Feet Over Dover

Eight out of nine school board members, of Dover, PA, were voted out and replaced with Democrats this week. Presumably, this is fallout over the intelligent design debacle. (Well, the judge hasn't rendered a decision yet, but many doubt it will go the school board's way.)

The Rev. Pat Robertson is not ammused.

"I’d like to say to the good citizens of Dover. If there is a disaster in your area, don’t turn to God, you just rejected Him from your city. And don’t wonder why He hasn’t helped you when problems begin, if they begin. I’m not saying they will, but if they do, just remember, you just voted God out of your city. And if that’s the case, don’t ask for His help because he might not be there."
(Watch the video clip if you don't believe it.)

I guess if there is a correlation between what it taught in science class and God's help during disasters, Kansas is the place to be. On the other hand, given the prevalence of tornados, that could be considered tempting God.

I wonder what the mormon-man-on-the-street-of-Dover take is on all of this.

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Wednesday, November 09, 2005

Would You Call This A Mandate?

Political victors like to think they have a mandate--even when the victory is by narrow margins. However, I think this might be an actual mandate. (Hat tip to Last Lemming for the link.)

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Tuesday, November 08, 2005

Noah's Flood

Speaking of the Black Sea hypothesis and Noah's Flood, I recommend Duane Jeffery's article on the topic from the October 2004 issue of Sunstone Magazine. It is freely available here and I will add a link to it on my sidebar.

The article is structured in three parts:

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(I) history of interpretation, (II) the Black Sea hypothesis, and (III) the Mormon perspective. While the Black Sea hypothesis is interesting to think about, I think most of the value is in parts I and III. Jeffery raises some interesting questions to consider--especially in the Mormon context. I also recommend the endnotes, which contain much additional information and discussion.

Note #28 brings up a question of particular interest to me: "Did Noah and his family carry all the known human disease pathogens, one wonders?" This question is only the tip of the iceburg of microbiological questions a global flood raises.

Consider:

1. Many disease-causing organisms have a limited host range. Smallpox, measles, and poliovirus are all exclusively human pathogens. Furthermore, immunity to these diseases is long-lasting. How could the few number of people on the ark (and after) maintain these organsisms? The same question applies to many animals with their specific pathogens.

2. It is not uncommon for a cross-species transmission of a disease to be highly lethal for the new host. (In a human context, SARS and Ebola come to mind, or the mass seal die-off that occured when a dog virus entered a seal population.) With all of those animals concentrated together, what stopped epidemics and mass casualties from taking place? Did rabies make it through?

3. Many microbes and parasites have complex life-cyles, infecting and continuing development in several different hosts. Were these life-cycles maintained?

I suppose it could be argued that these diseases came into existence after the flood, or that they were miraculously dormant during the flood--but that raises more questions.

Anyway, you can read a creationist defense of a global flood here. Also see FAIR's resources, including an Ensign article defending a global flood and Nibley's "Before Adam."

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Geomythology

In the latest Science there is a news article highlighting geomythology, a relatively new use of geology.

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Some geologists have taken an interest in the connection between folklore and science. The idea is that stories that have been passed down for generations within ethnic/cultural groups may be based on natural disasters such as earthquakes, volcanoes, tsunamis, etc. This approach has produced some fruitful results. For example, Native American folklore in the Seattle area places the location of ground-shaking spirits in a way that correlates well with faults running through the area.

The movement traces in part to the 1980s, when scientists realized that the slow march of geologic time is sometimes punctuated by biblical-scale catastrophes, such as the giant meteorite that wiped out dinosaurs 65 million years ago. After this was accepted, some (usually those with tenure) felt freer to wonder if near-universal myths of great floods and fires implied that such disasters also have punctuated human time. In the 1990s, Columbia University marine geologists Walter Pitman and William Ryan argued that rising Mediterranean sea levels following the last deglaciation topped what is now the Bosporus Strait and roared into the Black Sea 7600 years ago, serving as the original inspiration for the biblical flood. Their work triggered sharp criticism and a torrent of research, resulting in growing acceptance of some sort of Black Sea flooding. Whether the book of Genesis somehow grew from this is a further step, admits Ryan, who presented his latest findings at the International Geoscience Program in Istanbul, Turkey, in early October.


Of course, caution is warranted.
The pendulum may have swung too far in favor of accepting myths, says social anthropologist Benny Peiser of Liverpool John Moores University in the U.K., who runs the Cambridge Conference Network, an Internet clearinghouse for catastrophist theories. Now that more people are willing to listen, he says, too many scientists are invoking myth "left, right, and center to explain everything." In a paper at a late-October workshop on natural catastrophes in the ancient Mediterranean, he asserts that no major myths have yet met scientific standards, although he does credit some regional ones, such as the Pacific Northwest earthquakes. "That's not all bad," he says. "This is all so new, you expect more speculation than hard evidence. The refinements can come later."

You might call this an example of Mormon geomythology. If you know of others, please do tell. (Note: I am not implying that the Book of Mormon is not historical.)

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Monday, November 07, 2005

Review of FARMS Review

The latest issue of FARMS Review (Vol. 17 Issue 1, 2005) is available online to subscribers. Two of the articles are worth mentioning here.

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First is "Missing the Boat to Ancient America...Just Plain Missing the Boat," by Ryan Parr, which reviews Simon Southerton's book, Losing a Lost Tribe: Native Americans, DNA, and the Mormon Church. If you've been following this issue you won't find much new in this article. However, given his background, Parr seems like the most qualified commentator yet.

I do have one concern. Concerning DNA lineages, Parr states:

each [haplotype] must be selected by a random biological lottery from generation to generation. Statistically, this is known as “coalescence.”

...Indeed, over time, the fate of most Y and mtDNA lineages is extinction through coalescence.

I don't have access to the text he cites, but I'm pretty sure that instead of "coalescence" he means "genetic drift." Compare his usage of the term with this. Maybe I'm missing something, but I don't think he used this term correctly. [Correction: the term is used appropriately, as I explain in this comment.] This concerns me because if he's using basic population genetics terminology incorrectly, it makes you wonder about the quality of his analysis. At the very least, it opens the door to criticism from Southerton that Parr doesn't know what he's talking about. (This after Parr attacks Southerton on Southerton's area of expertise--plant genetics.)

There is also a review of Carl Sagan's The Demon-Haunted World: Science as a Candle in the Dark by Allen Buskirk. This is basically a defense of religion against the attacks of scientism. It's a little long but worth at least a skim. (Coincidentally, I recently decided to put Sagan's book on my list of books to read.)

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Friday, November 04, 2005

Sleep Paralysis Revisited

Recently a discussion about exoricisms raised the issue of sleep paralysis and its potential to explain many accounts of demonic encounters. A new book argues that sleep paralysis also helps to account for another phenomenon: alien abudctions.

A review of Abducted: How People Come to Believe They Were Kidnapped by Aliens explains the basic thesis:

1. People experience a frightening episode of sleep paralysis. The idea of alien abudction, being prominent in our culture, offers an explanation for the experience.

2. Seeking answers, they undergo hypnosis where false memories are created which help cement the explanation.

3. This is further reinforced, strangely enough, by a spiritual payoff.

The review is worth your time if you are interested at all.

I've heard stories but I've never been a true believer in alien encounters. At the same time seemingly normal people go for this stuff (including church members I have met), so it seems like more than just mental illness or something. The steps outlined above make sense to me, but then maybe some of you are true believers.

Please don't make stuff up, but if you have an alien story, please share.

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Wednesday, November 02, 2005

Must-Read Article by Sean Carroll

The latest Natural History Magazine (November 2005) looks like it has several articles well-worth reading. I don't have a print copy, and not all of the articles are available online, but I have to hightlight one that is. You really should read "The Origins of Form," by Sean Carroll. (I'm sorry, I don't know how to directly link to it.) The writing is interesting and the accompanying pictures are beautiful and elegant.

Advances in the new science of evolutionary developmental biology—dubbed “evo-devo” for short—have enabled biologists to see beyond the external beauty of organic forms into the mechanisms that shape their diversity. Much of what has been learned, about animal forms in particular, has been so stunning and unexpected that it has profoundly expanded and reshaped the picture of how evolution works. In the same stroke, evo-devo delivers some crushing blows against the outdated rhetoric of those who doubt that complex structures and organisms arise through natural selection.


I blogged about an article by Carroll, which is similar to this one, a few months ago. Expect to see his book on my sidebar sometime in the next few months.

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Vaccine Preventing Cervical Cancer is Controversial

I got wind of this a while ago (and commented here), but it looks like it is coming out into the open. Some groups are opposed to making the forthcoming HPV vaccine mandatory on the grounds that it will send the wrong message to kids about sexual behavior. Aetiology covers it here.

Money quote:

One can only hope that those who actively say they advocate a "culture of life" will put their money where their mouth is, and show that they value those 3,700 women who die of cervical cancer each year--deaths that may soon be completely preventable.

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Tuesday, November 01, 2005

The Good of Half a Wing

PZ Myers explains evidence that insect wings are derived from gills. The Panda's Thumb then highlights further corroborating evidence supporting the hypothesis. All of this helps to illustrate why the current paradigm of science is useful and fruitful--something competitors have not shown for themselves.

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