Finally, Proof of God!
A cat comes running out of the flaming rubble of the Towers Hotel right after it comes tumbling down in Dauphin, Manitoba.
I hope somebody found it a home.
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Why Evolution is True is a blog written by Jerry Coyne, centered on evolution and biology but also dealing with diverse topics like politics, culture, and cats.
Finally, Proof of God!
A cat comes running out of the flaming rubble of the Towers Hotel right after it comes tumbling down in Dauphin, Manitoba.
I hope somebody found it a home.
~
Most animals have the ability to regenerate lost parts, but not most of the tetrapods (the descendants of the four-legged creatures that invaded land; tetrapods include amphibians, reptiles, birds, and mammals).
Salamanders are the tetrapods best at regenerating lost parts: some can replace lost limbs, eyes, hearts (!) and tails at any stage of their life. Other salamanders can regenerate parts only when young, before metamorphosis into adults. Frogs can replace lost limbs, but only the limbs they have when tadpoles. As adults they lose this ability. Fish can replace some fin rays, but not lost fins. Lungfish (freshwater fish in the subclass Dipnoi) can apparently replace lost entire front or rear fins. Another primitive freshwater fish, Polypterus, can apparently regenerate its pectoral fins, though it’s not known whether this ability is limited to juveniles. Here’s a Polypterus:
Finally, and I bet you didn’t know this (neither did I), we humans can regenerate our fingertips, though this happens more readily in children than adults. I’ve added this photograph of fingertip regeneration suggested by reader Mark Sturtevant in a comment, which comes from a nice page summarizing animals’ ability to regenerate. It’s a bit grisly, but hell, we should be able to stand looking at this for the sake of education:
Other than that, though, humans can’t regenerate anything other major parts. The study of regeneration in salamanders has thus become a sort of cottage industry in biology, for if we could figure out how they do it—and they’re making some progress here—maybe we could help amputees regrow their limbs, something that God has proven incapable of doing—though He’s said to be able to cure many other ailments.
The information on regeneration across groups that I just gave came from a new paper in the Proceedings of the Royal Society (Series B) by Nadia Fröbisch et al. (link and free download below). But the main point of the paper was a striking new finding: fossil amphibians from 300 million years ago apparently had the ability to regenerate limbs, too. This, I think, is the first time that any fossil has been shown to have the ability to regrow lost body parts.
The authors studied many specimens of the primitive amphibian Micromelerpton credneri, from 300-million-year-old deposits in Europe. This is what one looks like; the preservation is remarkable (the scale bar is 1 cm., and there are about 2.5 cm per inch). The authors note that in this specimen you can see the shadow of the skin, the pigments in the retinas, the external gills, and the pattern of scales. This is not really a salamander, but a primitive amphibian whose placement in the tree of tetrapods will be shown shortly:

Looking at many specimens, the authors found that in some of the limbs there were signs of regeneration that resemble those seen in modern salamanders when they lose their limbs. They claim (and I can’t judge this, but take their word for it) that these anomalies are not simple deformities in the limbs of salamanders that have not lost their limbs.
Here is one sign of regeneration, two fused “phalanges” (fingers, if you will); normal specimens have four fingers on their front “hand,” this one has a bifurcated finger so there are five digits:

Another putatively regenerated limb, a foot this time. Feet normally have five digits, this one has six, with both central digits being thinner than normal. This, the authors say, is also a sign of regeneration and not just a deformity.
One potential problem with the results, which the authors discuss, is that while these are likely signs of regeneration, they don’t show that the regeneration happened in adults. The digits could have been lost and regrown as juveniles, and the signs of regeneration simply persisted in the adult, which may not themselves have lost the ability to regenerate limbs. In other words, these primitive amphibians may be like frogs or some salamanders, having regenerative abilities only when young.
So what does this mean for the evolutionary history of regeneration? The authors included a nice phylogenetic diagram of fish, amphibians, and other tetrapods, both primitive and modern, showing their regenerative capabilities. The placoderms (extinct armored fish) and chondrichthyes (fishes with cartilage: rays, skates, and sharks) can’t regenerate. Polyptera and Dipnoi can (the asterisks supposedly indicate regeneration only in juveniles, but we don’t know that for these two groups). We don’t know about the fishapod Tiktaalik, Acanthostega (one of the first tetrapods with limbs), or Eryops, an early and extinct amphibian. In fact, we don’t know the regenerative capabilities of anything without a gray box (indicating some regneration) or yellow box (those species whose phylogenetic placement is unsure; frogs and salamanders thus appear in two places).
Amniotes (birds, reptiles, and mammals) can’t regenerate anything.
What the authors suggest from this is because the “outgroup” of tetrapods—the lungfish and Polypterus, which are fish—have regenerative abilities, as well as some of their descendants (frogs and salamanders), it is possible that the ancestor of all tetrapods, an early fish, also had the ability to regenerate body parts. In the descendants that can no longer do it, like us, we might have lost that trait. In the language of cladistics, regneration is “symplesiomorphic”: an ancestral trait.
An alternative hypothesis is that the groups in gray independently evolved the ability of regenerate: it would then be a “synapomorphy” (shared derived character).
We can’t decide between these hypotheses at present though the authors favor the former one. The kind of evidence we’d need to decide between these hypotheses would be a bunch of early fossils showing the ability to regenerate, particularly in very primitive tetrapods or their precursors like Tiktaalik. If those had that ability, and it was seen in several early tetrapod species, it would support the notion that the very first tetrapods could all regenerate their limbs, but that the ability has been lost in some groups.
And that would raise the question: if groups like reptiles and mammals lost their ability to regenerate parts, why? It would seem to be a terrific advantage to be able to regrow lost parts. One possible answer is that the developmental system of these groups evolved in such a way that regeneration became physiologically impossible.. But of course we won’t know any of these things until we have better fossil evidence as well as some molecular data on exactly how limbs regenerate. If the molecular and developmental basis of regeneration were similar in all tetrapods, it would suggest that they have inherited that system from an ancestor, as it would be unlikely that such similarity could evolve independently. Biologists are working feverishly on the developmental basis of regeneration.
Maybe God can’t heal amputees, but perhaps science can.
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Fröbisch N. B., C. Bickelmann, and F. Witzmann. 2014. Early evolution of limb regeneration in tetrapods: evidence from a 300-million-year-old amphibian. Proc R Soc B 2014 281: 20141550
h/t: Dom
Today’s Jesus and Mo singles out a new study (reference below), but first the strip:
Indeed! Well, I suppose Jesus and Mo could simply dismiss the study, which I’m going to examine soon. Or, they could say that without religion you don’t have a good foundation or basis for morality. But what would that mean if religious and nonreligious people behave equally morally? Who would care about where the morality comes form? Besides, as everyone besides theists seems to know, morality doesn’t come from religion in the first place, but is simply codified and buttressed by religion.
Below this strip the artist has written that “The boys are disturbed by this article,” but “this article” links only to a blurb for a new study in Science.The real article, which I think is free to access (link and reference at bottom) does indeed say what has disturbed Jesus so much. Here’s its abstract (my emphasis):
The science of morality has drawn heavily on well-controlled but artificial laboratory settings. To study everyday morality, we repeatedly assessed moral or immoral acts and experiences in a large (N = 1252) sample using ecological momentary assessment. Moral experiences were surprisingly frequent and manifold. Liberals and conservatives emphasized somewhat different moral dimensions. Religious and nonreligious participants did not differ in the likelihood or quality of committed moral and immoral acts. Being the target of moral or immoral deeds had the strongest impact on happiness, whereas committing moral or immoral deeds had the strongest impact on sense of purpose. Analyses of daily dynamics revealed evidence for both moral contagion and moral licensing. In sum, morality science may benefit from a closer look at the antecedents, dynamics, and consequences of everyday moral experience.
So there’s your sense of “purpose,” Eric MacDonald! All you have to do to have that important “sense of purpose” is be moral, and, as you know, no god is required for that. And (I’ll check the data soon), it looks as if religious people don’t behave any more morally than heathens.
As I said, I’ll read the whole article this week and summarize it if it’s sufficiently interesting and solid.
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Hofmann, W., D. C. Wisneski, M. J. Brandt, and L. J. Skitka. 2014. Morality in everyday life. Science 345:1340-1343.
Last monday I met these false caterpillars eating poplar leaves. They are the larvae of Craesus septentrionalis, the birch sawfly, a remote parent of wasps and honeybees. You can tell them apart from the real caterpillars of butterflies and moths by their 6 yellow pairs of “prolegs” or false legs following the usual 3 pairs of insect legs. Real caterpillars have only 5 pairs of prolegs. Their strange attitude is actually a reaction to disturbance: they expose their abdomen where a special gland produces a repellent substance. I find their disciplined way of feasting collectively, following each other along the (remaining) edge of the leave, rather amazing.
We’ve met Gus the Cat before (here, here, and here), whose staff consists of reader Taskin. Gus lost his ears when he was caught in a live-trap set for him during a very cold winter in Canada. Trapped in a cage in freezing weather, Gus got frostbite, eventually losing his ears and nearly his toes. But Taskin took him in, and now he’s the happiest, sweetest, whitest and fluffiest cat ever. I call him “earless and fearless.” In fact, his truncated ears make him look extra cute.
Taskin sent me two recent photos of Gus. The first was labelled “What do you suppose Gus is thinking?”

It was also sent to reader Natalie Claudia Ingrid Pfeiffer, who responded with a haiku (not in her native tongue!):
“To save my green world,
Why can’t you solve climate change?
I’m just a white cat.”
And here’s another picture of Gus doing his Gene Simmons impersonation.
A negative review in the Telegraph of Karen Armstrong’s new book—Fields of Blood: Religion and the History of Violence—has been balanced by a very positive review in the Spectator, “Religion does not poison everything—everything poisons religion.” The reviewer is Ferdinand Mount—Baronet Mount to you—who was editor of the Times Literary Supplement for 11 years.
As you know if you saw the first post about the Telegraph review (note: I haven’t yet read her book; this is my take on Mount’s review), Armstrong’s thesis is that religion is not responsible for violence: it’s that other stuff like politics and culture that corrupts religion, all forms of which begin as benevolent. Mount thoroughly agrees, and says that Armstrong has done a terrific job supporting her thesis. I’ll give a few quotes, though I’m quite wary of such a thesis:
It slips so easily off the tongue. In fact, it’s a modern mantra. ‘Religion causes all the wars.’ Karen Armstrong claims to have heard it tossed off by American psychiatrists, London taxi-drivers and pretty much everyone else. Yet it’s an odd thing to say. For a start, which wars are we talking about? Among the many causes advanced for the Great War, ranging from the train timetables on the continent to the Kaiser’s withered left arm, I have never heard religion mentioned. Same with the second world war. The worst genocides of the last century — Hitler’s murder of the Jews and Atatürk’s massacre of the Armenians (not to mention his expulsion and massacre of the Greeks in Asia Minor too) — were perpetrated by secular nationalists who hated the religion they were born into. The long British wars of the 18th and 19th centuries — the Napoleonic wars and the Seven Years’ War — were cheerfully fought by what Wellington called ‘the scum of the earth’ for land and empire, not for the faiths to which they only nominally belonged.
We have to go back to the 17th century and the Wars of Religion to find a plausible candidate.
But who ever said religion causes all the wars? Certainly no scholar that I know of, and that includes Dawkins and Pinker. I guess Armstrong is taking taxi drivers as experts, but I really do doubt that she’s heard that so often.
As for the genocides of the last century, Hitler’s was by far the worst, and, really, how can one say that that didn’t involve religion? Why were the Jews singled out? And, as we should know by now, the Nazis were not by any means “secular nationalists who hated the religion they were born into”. That’s just a distortion of the truth. Where on earth did Mount get such an idea?
What about the partition in India in 1947? There there was no colonialism involved in the killings at all: people of identical ethnicity, background, and geographic origin killed each other based on whether they were Hindu or Muslim. On the trains heading for the Punjab, for instance, Hindu mobs would make male passengers expose their genitals, and kill them if they were circumcised (as Muslims are). Further, religion certainly exacerbated violence in Northern Ireland, and now all over the Middle East. But Mount manages to discount that, too. It wasn’t religion, after all, that inflamed the Muslims, but colonialism and jingoism that emanated from political sources, and colonialism by Israel and the West. Here’s Mount on Armstrong’s thesis:
Armstrong is at her best in drawing out the historical elements which crystallise into great religions. Typically, she says, they emerge in conditions of social stress and oppressive state violence. The founder preaches that the callous and ceaseless slaughter can be checked only if we learn to see the Other as our fellow human being. Invariably, his golden rule is: all men are equal in the sight of God, do as you would be done by, love your enemies, turn the other cheek.
This message is common to Confucius, Zoroaster, Jesus, Guru Nanak the founder of the Sikhs, Gandhi and Nurse Cavell. Muhammad too is reported to have told his followers that ‘not one of you can be a believer unless he desires for his neighbours what he desires for himself’. There are many verses in the Koran which instruct Muslims not to retaliate but to forgive and forbear, and to respond to aggression with mercy, patience and courtesy.
But wait! What about the rest of the Qur’an—the majority of it that urges killing infidels and apostates? Mount has an answer for that one, too:
But of course there are other verses which don’t, famously the Sword Verse, which eggs on the faithful to slaughter idolaters. The sad truth is that religions are corrupted by success. The more popular they become, the closer they are drawn into the ambit of state power, the more their practice and doctrine have to be remodelled to suit their new overlords. Armstrong reflects gloomily:
“Every major faith tradition has tracked the political entity in which it arose; none has become a ‘world religion’ without the patronage of a militarily powerful empire and every tradition would have to develop an imperial ideology.”
So it’s not religion that does the bad stuff, it’s state power that does the bad stuff, and just uses religion in its cause. All religions start out peaceful (is that true of Islam?) and then are used as an excuse to kill the Other:
Christopher Hitchens had it the wrong way round in his subtitle to God is Not Great. It should have been, not ‘How Religion Poisons Everything’ but ‘How Everything Poisons Religion’. This is the misunderstanding which drives fanatical secularists to demand that faith be driven out of the public square and permanently banned from re-entry, like a drunk from the pub he always picks a fight in.
In the end, Armstrong (and Mount) morph into Robert Pape, whose analysis of suicide bombers and terrorism being motivated by things other than religion has been under attack, but is nevertheless still cited by many, including Mount:
All terrorism is now routinely attributed to religious intoxication. Richard Dawkins tells us that ‘only religious faith is a strong enough force to motivate such utter madness in otherwise sane and decent people’. But Armstrong points out that suicide bombing was more or less invented by the Tamil Tigers, ‘a nationalist separatist group with no time for religion’. A Chicago University study of suicide attacks [by Robert Pape and his colleagues] worldwide over 25 years found ‘little connection between suicide and terrorism and Islamic fundamentalism, or any religion for that matter’. Out of 38 suicide bombings in the Lebanon during the 1980s, 27 were perpetrated by secularists and socialists, three by Christians and only eight by Muslims.
For one critique of Pape, see Scott Atran, “The moral logic and growth of suicide terrorism” in the 2006 Washington Quarterly 29, pp. 127–147. Atran’s analysis leads to this conclusion (p. 128):
Whereas they once primarily consisted of organized campaigns by militarily weak forces aiming to end the perceived occupation of their homeland, as argued by University of Chicago political scientist Robert Pape in Dying to Win: The Strategic Logic of Suicide Terrorism, suicide attacks today serve as banner actions for a thoroughly modern, global diaspora inspired by religion and claiming the role of vanguard for a massive, media-driven transnational political awakening. Living mostly in the diaspora and undeterred by the threat of retaliation against original home populations, jihadis, who are frequently middle-class, secularly well educated, but often “born-again” radical Islamists, including converts from Christianity, embrace apocalyptic visions for humanity’s violent salvation. In Muslim countries and across western Europe, bright and idealistic Muslim youth, even more than the marginalized and dispossessed, internalize the jihadi story, illustrated on satellite televi-sion and the Internet with the ubiquitous images of social injustice and poitical repression with which much of the Muslim world’s bulging immigrant and youth populations intimately identifies. From the suburbs of Paris to the jungles of Indonesia, I have interviewed culturally uprooted and politically restless youth who echo a stunningly simplified and decontextualized message of martyrdom for the sake of global jihad as life’s noblest cause. They are increasingly as willing and even eager to die as they are to kill.
Of course Mount doesn’t mention this. Perhaps he doesn’t know of it. If you’re going to quote Pape as gospel, though, as some readers have, you owe it to yourself to read Atran’s rebuttal. Pape’s data is not only old, but selective and biased. And if Atran is right, and we can believe what the suicide bombers tell us, then Mount has no right to conclude, as he does here:
Armstrong argues persuasively that it is under the cumulative pressure of invasion by outsiders and internal oppression that secular grievance morphs into jihad. To use an apt but unlovely term, invented I think by Dr Henry Kissinger, religion is ‘weaponised’ — how Dr Strangelove would adore the word. After years of Israeli blockade and creeping land grabs, Yasser Arafat’s entirely secular Palestine Liberation Organisation has segued into the Islamic Resistance Movement, or Hamas. Israel herself, founded as a secular haven in the teeth of the rabbis, has become a holy land after half a century of Arab encirclement. Now young men all over the Middle East, many of them originally secular and ignorant of Islam, as were the majority of the 9/11 bombers, are being hyped up by selective quotation of holy writ to commit crimes as unspeakable as, well, Samson’s.
Does Mount not realize that from the very instant that Israel was founded as a nation, the Arabs were out to destroy it? Does he think that that kind of violence is “new,” and is based on recent Israeli blockades and creeping land grabs? Does he not know that Israel was attacked on all sides by Egypt, Syria, Transjordan, and Iraq, the day after Israel was proclaimed a state in 1948? No, Arab hatred of the Jews, as enshrined in the Hamas charter and publicized daily in the state media, is pervasive and long-standing.
I suppose I’ll have to read Armstrong’s book, but of course she’s never wavered from her thesis religion is a force for good, and its perfidies are not only exaggerated by atheists, but are nonexistent. Things like sharia law, apparently, or the oppression of gays and women by both Catholics and Muslims (and the misogyny of orthodox Judaism), are not part of religion, but merely what happens to peaceful religion when it gets coopted by state power. And indeed, religion has surely been used as a weapon by the state to destroy its enemies, but surely that is not the whole story.
I suspect that Armstrong suffers from confirmation bias: I’ve read her books The Case for God, which I found almost incoherent, as well as Muhammad: A Prophet for Our Time, which I found nearly as much a whitewash of Islam as Reza Aslan’s No god but God. Are there any data that would get Armstrong (and Mount) to admit that religion qua religion can make people do bad things? After all, I’ll readily admit that religion qua religion has inspired people to do good things, though I think on balance running your life on superstition is harmful and certainly irrational.
h/t: Barry
NOTE: THE REPORT OF A CAPTURED MEGALODON IS A HOAX (see the reader’s comment #7, which reveals the site as a fake one. That’s what I get for not checking further. I’d ditch the post, but I’ll leave it up because you can still read about Megalodon, a truly awesome creature. My apologies.
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I don’t think this is real at all, but on the chance it might be, and the recurrent reports that the ancient shark Megalodon (taxonomic status uncertain) is still alive, here’s a report from the World News Daily, with pictures, saying that one was caught off the coast of Pakistan. The report says that it was 15 tons of beast, by far the largest shark ever caught, and twice the size of a big Great White shark. The report:
The giant creature first thought to be a great white shark was rapidly declared by experts to be an unknown species of shark as it’s great weight and size were unheard of. Analysis of the teeth suggest the shark to be a parent of the Megalodon, an extinct species of shark that lived approximately 28 to 1.5 million years ago, during the Cenozoic Era.
The sea creature that measures an incredible 10.4 meters and weighs an astounding 15.6 tons is the largest living shark ever caught to date, great white sharks reaching an impressive 7 tons at full growth, a size that is no match for this giant prehistoric shark that can reach an imposing 20 meters in length and possibly weight up to 30 tons, depending on estimates.
The specimen was revealed not to be fully grown and is estimated to be 2 or 3 years old and already twice the size of a full grown white shark, which takes 5 years to reach its full growth.
The photos in the article, with their captions:

Here’s a tooth, but it’s not even clear from the article whether this was taken from the shark’s jaw or is fossilized. The caption (and appearance) suggest the former, and if it’s real this is certainly not a shark we know:

Megalodon was thought to have gone extinct around 1.5 million years ago, so it is possible that a few are still lurking in the depths. After all, the coelocanth was captured alive in 1938 after we thought it had been extinct for over sixty million years. It would be nice to think it’s still there.
Megalodon was huge and fearsome. Here’s what Wikipedia says about its size
In the 1990s, marine biologists such as Patrick J. Schembri and Staphon Papson opined that C. megalodon may have approached a maximum of around 24 to 25 metres (79 to 82 ft) in total length, however Gottfried and colleagues proposed that C. megalodon could likely approach a maximum of only 20.3 metres (67 ft) in total length. Currently, most experts acknowledge that C.megalodon reached a total length of more than 16 metres (52 ft).
And a comparison to other creatures. Megalodon (with one of its disputed names) is gray and red, the great white, puny by comparison, is green, and the whale shark, a filter-feeding, non-dangerous shark that is the largest living nonmammalian creature, is in violet.
Fossil Megalodon are know mainly from their teeth and vertebrae; reconstructions, such as the jaw below, are extrapolations from these. But the teeth (below, with two teeth from Great White sharks) are undeniably indicative of a monster shark. I believe the scale is in centimeters, so the tooth is about 13.5 cm long, or about 5 inches long, matching the tooth above.
This is a famous (and of course speculative) reconstruction of a Megalodon jaw, produced
So do you think this report is true? Did they catch a living fossil? I’m betting no, but weigh in below.
h/t: Stephen Barnard