A Changing Society

This is really funny ... "Name Something That Gets Passed Around."

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[Hat Tip: Friendly Atheist]

A Challenge to Homeopathy

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Evolution Made Us All

This is from Ben Hillman at Vimeo [Evolution Made Us All]. I appreciate the intent but I can't help but wonder whether such videos don't do more harm than good. It makes me very uneasy to see evolution presented in such a manner and I really don't like the glorification of Charles Darwin that we see in popular views on evolution.

If we're truly interested in advancing the goal of science education then videos such as this are part of the problem, not part of the solution.

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[Hat Tip: RichardDawkins.net]

Former Canadian Prime Minister Kim Campbell Challenges the Teabaggers on Evolution & Climate Change

The Right Honourable Kim Campbell is the former Conservative Prime Minister of Canada. I never voted for her party but I'm proud of her today. She took on Congressman Jack Kingston (R, Georgia) recently on the Bill Maher show and showed him how stupid he was for denying climate change and evolution.

Even intelligent conservatives in Canada know about science. Unfortunately, many of today's leaders of the Conservative Party don't qualify as "intelligent." However, I don't know of any Canadian federal politician who would publicly confess to such ignorance about science as Jack Kingston.

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The Accommodationist War: Josh vs Jerry

Jerry Coyne visited a group of Methodist in Chicago and had an interesting conversation [A confab with the faithful]. Josh Rosenau tried to paint this as a concession to accommodationism by emphasizing that Coyne was being polite [Minor Coyne snark].

Jerry is, quite rightly, having none of this as his comment on his blog indicates.

There's more discussion at "Gnu Atheist" does not mean "nasty"; "accommodationist" does not mean "nice".

The disappointing thing about this incident is that Josh has failed to grasp the point about accommodationism even though we've been trying to explain it to him for four years. If that's what the rest of the people at NCSE believe then the Gnus have been wasting their time.

And Josh isn't backing off in spite of all the criticism he's received: The danger of certainty.

Jerry fires back with Gnus can be gnice!.

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Support Corporations: Wear the Flower

Read about Raffelesia and wear the flower to support free enterprise and profit making.

Support People for Corporate Tax Cuts.

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People for Corporate Tax Cuts

The recent economic downturn was caused by the private sector, especially big banks and investment companies. As an average citizen and public sector employee, I was happy to help out by giving the private sector bundles of taxpayer money in order to rescue them from their own greed. After all, that's what the public sector is for—to support free enterprise with government money.

Private companies need your help more than ever. They need corporate tax cuts. You can't expect them to support corporate welfare payments with high corporate tax rates. That would be like giving money to themselves and they don't teach that in business school, do they?

Support People for Corporate Tax Cuts.

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Out of Africa, but When?

I'm very uncomfortable with popular claims about the migration of modern humans into Asia and Europe. You often see the date as 50,000 years ago and most people seem to think that this was a sudden event associated with the destruction of ancient hominids (Neandertal, Homo erectus) who lived in Asia and Europe at this time.

The recent date was based largely on mitochondrial DNA sequences and it required a reliable time reference that just wasn't there. As other nuclear genes were analyzed the dates indicated much older migrations. Then there's the fossil evidence. I'm not able to judge that evidence but it didn't seem to me to be as neat and tidy as a sudden exodus at 50,000 years ago would require.

Fortunately we have John Hawks, a scientist who's area of expertise covers archeology AND population genetics. He thinks that the date for "Out of Africa" should be older and he can back up his skepticism with evidence. Read his latest posting at: Jebel Faya and early-stage reduction. Will the new date end up being 100,000 years ago—or maybe even 150,000 years ago?

Since John doesn't allow comments on his blog I thought I'd open up some discussion here. John, aside from the question of modern Homo sapiens, when did Neandertals leave Africa and when was the migration of Homo erectus? How secure are those dates?

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P.S. As I was about to publish this post I did a quick check to see when the movie was released. It was 1985. This means that none of the students in my molecular evolution class were alive when it came out. I feel old.

[Image Credit: The map is from The Human Journey.]

Are the "Good Guys" Losing in America?

The battle between science and religion has been going on for centuries. Part of the conflict is over the teaching of evolution in American public schools. Religious parents don't want their children exposed to ungodly evolution and the most vocal of them want creationism taught as part of the science curriculum.

Now you might think that that this particular battle has been decisively won by the "good guys" because of all the court victories. Not so. The results in the classroom reveal that evolution is not being taught except in the most liberal states and a substantial number of teachers are teaching creationism in spite of the law.

You can read postings on The Panda's Thumb [Who controls America’s schools? Who should?] and on Pharyngula [Bad science education in the US]. Each of these authors has their own take on the issue.

I want to raise another question. What good has it done to win all the court cases? Has it prevented an even worse disaster? Has relying on lawyers to defend evolution been the right strategy or should more emphasis have been placed on promoting good science instead of the American Constitution?

There's one point that few people raise. Evolution is taught badly even in universities—and so is everything else. You might think that by the time a student graduates with a degree from university he or she will be knowledgeable enough to reject superstition and rely on critical thinking. If we can't even do a good job of teaching adults in university then how can we expect public school teachers to do any better? In an ideal world every parent who is a university graduate should be an ally of their child's teacher when it comes to supporting good science education.

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PZ Myers on TVOntario

PZ Myers gave a talk at the Atheist Alliance International meeting in Montreal last October. It was taped for TVOntario's "Big Ideas" show and it will air tomorrow (Sunday, January 30, 2011) at 5:30 pm.

Or, you can watch it right now on the TVO website at PZ Myers on Science and Atheism: Natural Allies. Even better, here's the YouTube version for your immediate viewing pleasure.

WARNING: PZ Myers is one of those Gnu Atheists and some people may find it offensive to have their cherished beliefs questioned.¹

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1. As Ricky Gervais said recently, "Just because you're offended doesn't mean you are right."

Zoë Walks

I hope you all appreciate the fact that I've not been inundating you with photos and videos of my granddaughter, Zoë. You probably don't share my view that she's the third most wonderful girl in the world.

Anyway, just in case you were feeling neglected, here's Zoë taking her first steps. She was almost walking during her visit at Christmas but now she's really a toddler.

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More Prebiotic Soup Nonsense

There's another round of nonsense under way, fueled by the discovery that chemical trickery can lead to a slight excess of L-amino acids over D-amino acids. There's a BBC News story about it at: 'Life chemicals' may have formed around far-flung star. The story is reproduced without comment on RichardDawkins.net.

The press reports refer to an article published in The Astrophysical Journal Letters [NON-RACEMIC AMINO ACID PRODUCTION BY ULTRAVIOLET IRRADIATION OF ACHIRAL INTERSTELLAR ICE ANALOGS WITH CIRCULARLY POLARIZED LIGHT]. Here's the abstract.

The delivery of organic matter to the primitive Earth via comets and meteorites has long been hypothesized to be an important source for prebiotic compounds such as amino acids or their chemical precursors that contributed to the development of prebiotic chemistry leading, on Earth, to the emergence of life. Photochemistry of inter/circumstellar ices around protostellar objects is a potential process leading to complex organic species, although difficult to establish from limited infrared observations only. Here we report the first abiotic cosmic ice simulation experiments that produce species with enantiomeric excesses (e.e.'s). Circularly polarized ultraviolet light (UV-CPL) from a synchrotron source induces asymmetric photochemistry on initially achiral inter/circumstellar ice analogs. Enantioselective multidimensional gas chromatography measurements show significant e.e.'s of up to 1.34% for (13C)-alanine, for which the signs and absolute values are related to the helicity and number of CPL photons per deposited molecule. This result, directly comparable with some L excesses measured in meteorites, supports a scenario in which exogenous delivery of organics displaying a slight L excess, produced in an extraterrestrial environment by an asymmetric astrophysical process, is at the origin of biomolecular asymmetry on Earth. As a consequence, a fraction of the meteoritic organic material consisting of non-racemic compounds may well have been formed outside the solar system. Finally, following this hypothesis, we support the idea that the protosolar nebula has indeed been formed in a region of massive star formation, regions where UV-CPL of the same helicity is actually observed over large spatial areas.

The authors assume that the primodial soup speculation about the origin of life is the most reasonable explanation. According to this widely believed scenario, life originated in a soup of organic molecules that supplied most of the molecules of metabolism such as glucose and amino acids (and nucleotides?). Presumably once life got underway these molecules were used up and only then did metabolic pathways evolve to synthesize these molecules.

The competing hypothesis is Metabolism First [Metabolism First and the Origin of Life]. In this scenario, the first steps involved the establishment of simple oxidation-reduction reactions across a "membrane" using inorganic molecules. Once this supply of energy was in place the first pathways led to synthesis of simple organic molecules like acetate and glycine.

What's wrong with the Primordial Soup model? Well, for one thing, it's awfully hard to imagine how incoming asteroids could supply enough material to make a difference. The maximum concentration of all amino acids in the ocean, for example, could never have been more than 10-100 pM and that's optimistic [Can watery asteroids explain why life is 'left-handed'?].¹

Instead of trying to prove that asteroids could carry a slight excess of L-amino acids, I wish these workers would apply a bit of healthy skepticism to the subsequent steps of the scenario. It's not reasonable to assume that minute quantities of amino acids could ever fuel the origin of life. Incidentally, the Primordial Soup Hypothesis also imagines that early cells used exogenous glucose as a fuel. This implies that the glycolysis pathway is more primitive that the gluconeogenesis pathway for synthesis of glucose. Unfortunately the data disproves this prediction. Gluconeogenesis is more ancient and glycolysis evolved later [Aldolase in Gluconeogenesis & Glycolysis]. A nasty little fact.

The real problem is not that metabolism firstists such as Bill Martin are right and soupists are wrong—although that's a very real possibility. The problem is that most scientists are not thinking critically about the origin of life. There are several possibilities and none of them are particularly convincing. However, the Primordial Soup Hypothesis has a number of glaring weaknesses that need to be addressed honestly and it doesn't do anyone any good if scientists sweep these weaknesses under the rug.

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1. We're talking about a primordial soup where the concentration of L-alanine might be 0.50 pM and the concentration of D-alanine might be 0.49 pM. That's supposed to be enough for life based on amino acids to evolve and to lead to the subsequent preference for synthesizing exclusively L-amino acids. How, exactly, does that work?

What Should Replace Religion?

Here's Daniel Dennett speaking in Montreal last October. He addresses the "problem" of what should replace religion once we get rid of it. You may wonder what "problem" he's referring to. After all, when you visit countries in Europe you don't see a pressing need to come up with some institutions that replace religion.

Here's a list of good things that religion provides according to Dennett: hope, love, beauty, joy, and moral teamwork. These are the things we get from organized religion.

Really? I haven't noticed that these things are missing in the lives of my atheist friends. Nor have I noticed that the people of Denmark or Belgium are loveless, joyless and incapable of moral teamwork. What the heck is he talking about? What he's talking about is the idea that a church is "the place where if you have to go there they have to take you in."

... churches do that very well. They are a safety net of last resort for many people, and not just poor people, ... churches open their doors to these people and they can do a better job at this than government agencies.

He's talking about churches as safety nets and sources of social support. What he's talking about is the (possible) necessity of churches in a country that rejects socialism. He's talking about America but he doesn't admit it.

You can watch the faces of this mostly Canadian audience, as I did, to see how well Dennet's ideas are being received. There's a lot of puzzled looks as you might expect in a country where socialized medicine is a universal right. Why do you need churches for those things that any just society must provide? Why do you need churches when you have publicly funded community centers where you can hang out with your friends and neighbors?

Things go rapidly downhill from that point on (about 12 minutes into the talk). The next part of the talk is about religious music. It includes some truly excruciating atheist gospel songs that the audience is subjected to. (They cut out a large part of that from the video.) The remainder of the talk has very little to do with the necessity of religion.

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Inciting Hatred

 
This video is making the rounds. I'm including it here because so many people have been discussing "civility" and "politeness" in the wake of the Tuscon mass killing. In my opinion, it's not lack of civility that's the problem. The problem arises when you start treating your opponents as anti-American and unpatriotic and their ideas as illegitimate (not just a difference of opinion). That's when it becomes reasonable to consider using force to prevent your enemy from destroying the country. You are protecting America against dictatorial traitors and that's exactly what reasonable citizens should do.

Glen Beck is a master of this technique. He should not be surprised if some of his followers jump to the obvious conclusion. Indeed, CUNY professor Frances Fox Piven (78 years old) has been receiving death threats ever since Beck's rant aired on television last November [Glenn Beck's Ranting Sparks Death Threats Against 78-Year-Old Sociologist]. Is anyone surprised?

Why does Glen Beck still have a job?

A note to Canadian readers. Pay attention. This is the real problem, not simple lack of politeness.

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What Did You Learn at University?

What did you learn at university? Not much, it seems, according to the data in a new book titled Academically Adrift. The book is reviewed in the latest issue if Inside Higher Ed [Academically Adrift].

The data aren't surprising. The authors of the book show that 36% of students failed to learn anything after four years of college. Of those who did learn something, the gains were very modest.

Why don't students learn?

The main culprit for lack of academic progress of students, according to the authors, is a lack of rigor. They review data from student surveys to show, for example, that 32 percent of students each semester do not take any courses with more than 40 pages of reading assigned a week, and that half don't take a single course in which they must write more than 20 pages over the course of a semester. Further, the authors note that students spend, on average, only about 12-14 hours a week studying, and that much of this time is studying in groups.

Who's to blame for this sorry state of affairs?

Debra Humphreys, vice president for communications and public affairs of AAC&U, said that she viewed the book as "devastating" in its critique of higher education. Faculty members and administrators (not to mention students and parents) should be alarmed by how little learning the authors found to be taking place, she said. Humphreys also said that the findings should give pause to those anxious to push students through and award more degrees -- without perhaps giving enough attention to what happens during a college education.

"In the race to completion, there is this assumption that a credit is a credit is a credit, and when you get to the magic number of credits, you will have learned what you need to learn," she said. What this book shows, Humphreys added, is that "you can accumulate an awful lot of credits and not learn anything."

None of this is news my colleagues and me. Problem is, there's not much we can do about it. If we increase the rigor of our biochemistry courses and start demanding more of our students then the result won't be increased learning. It will simply mean that undergraduates will avoid biochemistry courses. In fact, that's already happening since the University of Toronto has developed dozens of new programs that will award degrees in the biological sciences without ever forcing students to take a rigorous course.

This brings up a question that I often ask my students. If university is supposed to be difficult (rigorous) then it's likely that some students won't be capable of completing a degree. In an ideal setting with expertly taught, challenging, programs, what percentage of the incoming class of students should expect to complete a degree? Clearly the answer can't be 100% because that bar is way too low. Should it be 50% as it was in many universities in the past? Lower?

The graduation rate at the University of Toronto has been pretty constant over the past decade at 73-75%. I assume that many of the students who drop out do so for reasons other than the rigor of university courses (e.g., personal problems, financial problems, transfers, changing goals etc.). Let's assume that this accounts for 15% of the drop-outs.

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[Hat Tip: Uncertain Principles]