Thursday, June 29, 2006

Utah Geology

I'm going to be visiting Utah soon and while I'm there I hope to teach myself some geology. A nice resource to help me is the Utah Geologic Survey. There is a wealth of information on the website for a novice like me.

There's lots of information on the geologic history of Utah (such as the formation of Lake Bonneville and the Great Salt Lake), as well as information on dinosaurs, fossils, minerals, and rocks. Another page has information on geologic sites including a walking tour of downtown Salt Lake City to see the different types of rocks used in construction, and a driving tour that starts at the bottom of Parley's Canyon, goes up over Guardsman Pass, and down Big Cottonwood Canyon.

I doubt I'll have time to see all I want to--and of course I get interested after I lived there, but I'm sure I'll have many opportunities to go back. If you are at all interested in Utah geology, you need to give the website a look.

Continue reading...

Tuesday, June 27, 2006

Review of the July 2006 Ensign

I had a look through the July Ensign last night and saw a few things I thought I would comment on.

President Hinckley
I noticed much usage of "I believe" in Pres. Hinckley's article. Its launching point is the first Article of Faith, so it makes sense. It just struck me that here I was reading what the prophet has to say about God and he's saying "I believe." In my view the debate over whether a testimony constitutes knowledge or belief is largely one of symantics--the line between knowledge and belief is fuzzy and fluid, IMO. It's not a big deal to me, but for some it might be. If you ever have to defend yourself about only saying that you believe (rather than "know"), President Hinckley's article might help you.

Pioneers
I didn't read the whole article but I did notice the little chart summarizing the handcart companies and how many people died in each one. The Willie and Martin companies lost a good number of people (~14% and 25%, respectively), but most of the rest lost 5% or fewer (even zero). I wonder how a comparable group not crossing the plains would fare. Anyway, the trek out west was certainly tough and a large undertaking that required sacrifice, but perhaps we distort it a little by emphasizing the death and misery in our stories.

The Natural Man
This article is part of a "continuing series examining doctrines unique" to the Church. There is no authorship attached, so I guess you can assume that it is fully endorsed by the Church--or not--depending on what argument you are trying to make, but I digress.

I really liked the this quote from David O. McKay:

[Man has a dual nature...] "One, related to the earthly or animal life; the other, akin to the Divine. Whether a man remains satisfied within what we designate the animal world, satisfied with what the animal world will give him, yielding without effort to the whims of his appetites and passions and slipping farther and farther into the realm of indulgence, or whether, through self-mastery, he rises toward intellectual, moral, and spiritual enjoyments depends upon the kind of choice he makes every day, nay, every hour of his life".
This statement captures part of why I think that evolution can (and ultimately will) fit into the Plan of Salvation. Evolution goes a long way toward explaining how the natural man came to be, or in Pres. McKay's words, why we have a nature "related to...animal life."

Check the Boys
A woman tells her story of waking in the middle of the night and hearing a voice tell her to check on her boys. After the third prompting (it's always three) she does so and discovers one of her sons in a life threatening situation. I like these kinds of stories because they serve to remind us that simple miracles happen.

Continue reading...

Friday, June 23, 2006

Joseph Smith and Phrenology


The subdivision of the brain into different functional areas is a basic concept that probably most people are familiar with. This understanding has roots that run through the discarded notion of phrenology, which was conceived in the late 1700's and made its way to America in the 1830's. The idea behind phrenology was that different functions of the brain were divided within certain areas of the brain, that the size of those areas translated into abilities, and that the shape of the skull was a reflection of the shape of the brain.

Phrenologists claimed that feeling or measuring the contours of the skull provided insight into a person's character. For example, a person might have a bump or depression in the skull indicating the presence or absence of honesty. Although there were skeptics all along, phrenology was generally discredited by the early part of the the twentieth century.(For more information, see The History of Phrenology on the Web, and The Skeptic's Dictionary.)

Davis Bitton and Gary Bunker have written about the intersection of phrenology with Mormons in their article, Phrenology Among the Mormons, in Dialogue: A Journal of Mormon Thought (Vol. 9 No. 1). It was a topic that even Joseph Smith weighed in on during the Nauvoo period. (Note: Apparently Michael Quinn's book, Early Mormonism and the Magic World View, contains discussion of phrenology. I do not have the book; I would be happy to have someone summarize his discussion in the comments.)

Continue Reading


5 January 1841 -

Minutes: One night Joseph Smith said to D Ells [Dr. Josiah Ells] and to the congregation that he for a length of time thought on phrenology, and that he had a revelation, the Lord rebuking him sharply in crediting such a thing; and further said there was no reality in such a science, but [it] was the works of the devil. (Words of Joseph Smith, p.61)

2 July 1842 - With Joseph's permission, a phrenologist published his evaluation of Joseph in the Nauvoo Wasp. History of the Church contains the findings followed by this comment:
I give the foregoing in my history for the gratification of the curious, and not for [any] respect [I entertain for] phrenology. (HC 5:55)

6 May 1843 -
In the morning, had an interview with a lecturer on Mesmerism and Phrenology. Objected to his performing in the city. (HC 5:383)

13 and 14 October 1843 -
Dr. Turner, a phrenologist, came in. I gratified his curiosity for about an hour by allowing him to examine my head....In the morning, at home, having a long conversation with a physiologist and mesmeriser. I asked them to prove that the mind of man was seated in one part of the brain more than another. (HC 6:56)
(Note: the above quotations are collected in Encyclopedia of Joseph Smith's Teachings by Larry Dahl and Donald Cannon.)

Joseph's skepticism of phrenology was apparently prophetic, but perhaps he went too far in his dismissal. Although the practice of phrenology was discredited, some of the underlying ideas have been shown to be correct. The functions of the brain are divided into specific areas, and in at least some cases function correlates with size.

In spite of Joseph's disapproval of phrenology, some Mormons continued to take an interest in the topic. Church leaders had differing views on it, but generally refrained from either endorsing or condemning. Bitton and Bunker note that, in some respects, phrenology had little to offer Mormons. Phrenology had a component of self-improvement to it--something already contained in Mormon theology. And whereas phrenology claimed to give insight into a person's character, providing strengths and weaknesses, Mormons had patriarchal blessings that, to some extent, did the same thing. By the middle of the twentieth century, the phrenology fad was dead.

Continue reading...

Thursday, June 22, 2006

Discovering the Fountains of Life

A little over a month ago, a commenter (BrianJ) suggested that an interesting idea for a book would be a history of people's understanding of biological reproduction. A forthcoming book may not fit the bill exactly, but comes pretty close.

The book is called Generation: The 17th Century Scientists Who Unraveled the Secrets of Human Reproduction. Here's a description from Amazon.com.

Generation is the story of the exciting, largely forgotten decade during the seventeenth century when a group of young scientists—Jan Swammerdam, the son of a Protestant apothecary, Nils Stensen (also known as Steno), a Danish anatomist who first discovered the human tear duct, Reinier de Graaf, the attractive and brilliant son of a rich and successful Catholic architect, and Antoni Leeuwenhoek, a self-taught draper—dared to challenge thousands of years of orthodox thinking about where life comes from. By meticulous experimentation, dissection, and observation with the newly invented microscope, they showed that like breeds like, that all animals come from an egg, that there is no such thing as spontaneous generation, and that there are millions of tiny, wriggling “eels” in semen. However, their ultimate inability to fully understand the evidence that was in front of them led to a fatal mistake. As a result, the final leap in describing the process of reproduction—which would ultimately give birth to the science of genetics—took nearly two centuries for humanity to achieve. Including previously untranslated documents, Generation interweaves the personal stories of these scientists against a backdrop of the Dutch “Golden Age.” It is a riveting account of the audacious men who swept away old certainties and provided the foundation for much of our current understanding of the living world.
The book received a favorable review in Nature, and there is a website dedicated to it with supplementary material. It looks like it is not available in the U.S. until August. I'll have to keep it on my list of books to read.

Continue reading...

Tuesday, June 20, 2006

Ark-eology

Ed Brayton at Dispatches from the Culture Wars has a post on recent claims that Noah's Ark is in Iran. The evidence is so convincing that the widow of an astronaut thinks they just might have found it. You can read Ed's commentary here, and be sure to see his subsequent uncovering of a diploma-mill degree. The original story is here. Be sure to look at the pictures that appear to show petrified wood sticking out of the ground. Perhaps the photos will convince you. But remember, some think that the ark should be in Turkey.

In fact, it was just last March that other groups got excited about a satellite image of Mt. Ararat (not to mention another group that claims to have already found the ark), as reported in this WorldNetDaily article.

Three different locations and three different "arkish" formations--how will the true one be distinguished? I guess scientists could be called in, but they are generally a skeptical bunch with a propensity to come up with unpleasant results, so presumably some other test will need to be devised.

Continue reading...

Coulter Criticism

The criticisms of Ann Coulter's book, Godless: The Church of Liberalism are starting to come in--specifically, the portion of the book taking on evolution. The folks at The Panda's Thumb appear to be dividing the work up and posting on their own blogs. I mentioned the book and a few of my impressions here. Below I will collect substantive criticisms and make this index available on the sidebar for a while. The links will be grouped by blog (or website).

Continue Reading


Pharyngula
No Evidence for Evolution?: Gives general information on how to find and read about evidence for evolution.

Dispatches from the Culture Wars
Let the Criticism Commence: General comments with some evidence for evolution. Also discusses the duplicity between what Intelligent Design proponents claim for their theory versus the arguments they make, using peppered moths as an example.

The Panda's Thumb
Clueless: Following Discovery Institute writings, Coulter accuses scientists of fraud for using peppered moths as an example of evolution.

EvolutionBlog
Is Natural Selection a Tautology?: Jason from EvolutionBlog discusses the tautology argument. Money quote: "...it has never once happened in the history of science that a theory achieves mainstream status, only to fall apart when a clever outsider notices a simple logical oversight."

The Loom
Behold, For *I* am the Giant Flatulent Raccoon!: Carl Zimmer discusses a passage that was apparently inspired by one of his articles.

Talk Reason
Secondary Addiction: Ann Coulter on Evoution, Part I: Coulter's reliance on secondary sources leads her into errors.

Secondary Addiction: Ann Coulter on Evoution, Part II: Deals with Coulter's treatment of paleontology.

Secondary Addiction: Ann Coulter on Evolution, Part III: Focuses on Archaeopteryx.

Continue reading...

Wednesday, June 14, 2006

Why Homosexuality Exists: Some Hypotheses

Homosexuality is not my favorite subject, and to the extent that I am interested in it, it's mostly on a theoretical level. But PZ Myers at Pharyngula commented on the same article I blogged about a few days ago, and I think his comments are worth reading if you are interested in why homosexuality appears in nature. He lists several reasonable hypotheses. Contrary to what you might expect, he does not favor a strict genetic connection. Rather, his view is that it is a by-product of the commonalities between men and women in the developmental process, sort of like why men have nipples.

As he notes, there may be multiple mechanisms.

Continue reading...

Ann Coulter on Evolution

Ann Coulter's new book, Godless, has several chapters devoted to bashing evolution. Naturally this has has caused a little bit of rumbling around the science-oriented blogosphere. Many of the commenters are politically left of center, so they already have reason to dislike her based on politics.

William Dembski, of the Discovery Institute, claims to have helped Ann. I briefy perused the book at the store a few days ago and it sure looks like she had input from DI types (which seems to be confirmed.) It has many of the distortions and talking points that the DI has been putting forth--even some old creationist chestnuts like "survival of the fittest is a tautology." I also saw some bold sweeping assertions about, say, the fossil record. Now you and I both know that she isn't any kind of expert on paleontology, and given that evolution is firmly a part of paleontology, the experts wouldn't back her up. But that doesn't stop her from pronouncing the fossil record as devoid of evidence for evolution.

Coulter's angle, of course, is that Darwinism is the religion of godless liberals. Well I suppose it could be, but what to do about folks on her team--Christians and conservatives--that accept evolution? People like George Will or Charles Krauthammer, or any other number of people? Clearly the dichotomy is not how she is drawing it.

If there is value in that part of the book, it may be that it concisely lays out current anti-evolutionary arguments, with spice. But if you read the book, at least read some mainstream science to go along with it. Or easier, visit the Talk.Origins index to creationist claims--I'm confident that you will find much of what she has written has already been dealt with.

P.S. I once had occasion to meet Ann Coulter and sit at her table at a dinner. At the time I had no idea who she was.

Continue reading...

Friday, June 09, 2006

Non-Human and Gay

Seed Magazine (a magazine dedicated to science and culture) has an article about homosexuality in the animal kingdom. It focuses on one (transexual) biologist's attempt to change the way biologists look at sexuality. You have to get to the end of the article to see that most evolutionary biologists remain skeptical or think that the role of homosexuality is being exaggerated, but the article does raise some interesting points. The main argument is that sexuality is not only about reproduction--that it builds social relationships and helps individuals to get along.

For too long, she says, biology has neglected evidence that mating isn't only about multiplying. Sometimes, as in the case of all those gay sheep, dolphins and primates, animals have sex just for fun or to cement their social bonds..."

"Same-sex sexuality is just another way of maintaining physical intimacy," Roughgarden says. "It's like grooming, except we have lots of pleasure neurons in our genitals. When animals exhibit homosexual behavior, they are just using their genitals for a socially significant purpose."
That's all fine and good, but I thought this was a bit much:
Being gay or straight seems to be an intrinsic and implacable part of our identity. Roughgarden disagrees. "In our culture, we assume that there is a straight-gay binary, and that you are either one or the other. But if you look at vertebrates, that just isn't the case. You will almost never find animals or primates that are exclusively gay. Other human cultures show the same thing." Since Roughgarden believes that the hetero/homo distinction is a purely cultural creation, and not a fact of biology, she thinks it is only a matter of time before we return to the standard primate model. "I'm convinced that in 50 years, the gay-straight dichotomy will dissolve. I think it just takes too much social energy to preserve. All this campy, flamboyant behavior: It's just such hard work."
Um, maybe in some circles, but otherwise, dream on.

Here's a final quote:
At last count, over 450 different vertebrate species could be beheaded in Saudi Arabia. You name it, there's a vertebrate out there that does it.
Nature sure is diverse. Appeal to it with caution.

Continue reading...

Thursday, June 08, 2006

Pufferfish and Ancestral Genomes

PZ Myers of Pharyngula has a nice discussion of the publication of the pufferfish genome and the interesting things that can be inferred by comparing it with the human genome. It looks like he originally wrote it a couple of years ago and is re-posting it. It may not be late-breaking news, but it is still interesting and worth a few minutes of your time.

(It even has some pretty pictures, and I heard he's serving refreshments too. Still not interested? Well, you're in charge of folding up chairs afterward.)

Continue reading...

HPV Vaccine Approved

The FDA has approved a vaccine that protects against some types of human papillomavirus that can lead to cervical cancer. I've discussed the vaccine before (here and here.)

Adventures in Ethics and Science has some discussion on the political and economic front.

Continue reading...

Viruses are the Spice of Life

This week's Nature has a news article about the large and diverse role that viruses play in the ecology on this earth, and the insights about the past that we are gaining from them. If you can name an organism, there is probably a virus that infects it.

Continue Reading


Hints of the vast, unexplored viral world first emerged during the 1980s. Researchers at the University of Bergen in Norway, with the help of a new electron-microscopy technique, showed that viral concentrations in some aquatic habitats were up to 10 million times greater than previous estimates. Viral particles per millilitre ranged from 60,000, deep beneath the Barents Sea, to 254 million, from the surface waters of Germany's Lake Plussee.

Since then researchers have discovered huge numbers of viruses wherever they have looked, from 2,000 metres below the surface of Earth to the sands of the Sahara Desert, from acidic hot springs to polar lakes. In total there are now thought to be some 10^31 viral particles on the planet — an astronomical figure that one researcher recently described as 250 million light years' worth of viral genes laid end to end.

Then, in the mid-1990s, researchers started to grasp the dazzling variety that exists within this viral multitude. Biologists discovered that the known and cultured viruses represented just a fraction of their respective groups. From one cubic metre of seawater to the next, there was more genetic diversity in viruses than found in any other known group of organisms.
These viruses are a large reservoir of genetic diversity that can wind up in the host genome. (FYI, a phage is a virus that infects bacteria.)
A big question now is the degree to which this super-organism extends its tentacles into host genomes. It has long been known that bacteria use genes acquired from prophages — phages that insert their DNA temporarily or even permanently into the DNA of their host — to gain competitive advantage and exploit new environments. Indeed, work reaching back decades has shown that prophage genes carried by bacteria are responsible for producing the primary toxins associated with diseases such as diphtheria, scarlet fever, food poisoning, botulism and cholera.
I think this next bit is fascinating to think about.
Phage DNA has also made it into the human genome, despite the fact that phages target bacteria. The source was our mitochondria, the energy-producing capsules found in our cells and thought to be the descendants of a formerly free-living bacterium. During evolution, phage genes from the mitochondrial genome have transferred into our main genome, housed in the cell's nucleus. There, they help copy and express the few bacterial genes still present in the mitochondrial genome. Recently, this same phage DNA has been spotted in various modern bacteria belonging to the group from which mitochondria are thought to have descended. That supports the idea that the gene made its way from virus to bacterium to cell nucleus, where it now plays a key role in the molecular circuitry that drives all multicelled organisms.
The article also mentions retroviral remains in our genome, some of which appear to play a function in our physiology.

Virology isn't just about disease anymore.




Nature 441, 683-685 (8 June 2006)

Continue reading...

Tuesday, June 06, 2006

Elder Hafen on Adam and Eve

I've been reading Elder Bruce C. Hafen's book Covenant Hearts: Marriage and the Joy of Human Love. Here is a passage about Adam and Eve that I liked.

Continue Reading


--Begin Quote--

Adam and Eve's story sets the pattern for our own lives. Their experience is the primal story about how the great "plan of hapiness" (Alma 42:16) actually works--and the story is about a married couple. The story has six archetypal elements.

  • Living before mortal birth with our Mother and our Father, God of the Universe.

  • Making choices, learning, hopefully marrying and becoming parents ourselves.

  • Contending against the opposition of an Enemy who keeps trying to destroy God's plan and our happiness.

  • Overcoming the Enemy through a Redeemer whose sacrifice, together with our efforts, allows us to go home.

  • Returning home, mature and married, there to remain with our eternal Parents and be like them, like God.
--End Quote--


It seems to me that the story of Adam and Eve is much more about these archetypal elements than about details of creation.


Continue reading...

Biodiversity and Human Health

PLoS Medicine has an essay describing one connection between biodiversity and human health.

In this Essay, we describe how disease risk is influenced by biological diversity and, specifically, how some host species act to reduce the risk of transmission of virulent zoonotic pathogens to people. This represents an exciting area of study where ecologists, conservation planners, and physicians can work together to reduce disease risk and maintain biological diversity. In a world where climate change may allow vector-transmitted diseases to spread from the tropics into the temperate zone, it may be sensible to conserve biological diversity for the purely selfish reasons of protecting human health.

Continue reading...

Monday, June 05, 2006

Faithless, Stupid, or Crazy?

You decide.

KIEV (Reuters) - A man shouting that God would keep him safe was mauled to death by a lioness in Kiev zoo after he crept into the animal's enclosure, a zoo official said on Monday.

"The man shouted 'God will save me, if he exists', lowered himself by a rope into the enclosure, took his shoes off and went up to the lions," the official said.

"A lioness went straight for him, knocked him down and severed his carotid artery."
As for me and my house, we will stick with good old-fashioned snake handling.

Continue reading...

  © Blogger templates The Professional Template by Ourblogtemplates.com 2008

Back to TOP