Archives for posts with tag: bacteria

Crickets in two places fall silent to survive“To hide themselves from deadly flies, crickets on two Hawaiian islands have evolved an inability to sing. Ten years ago, two years apart, males appeared on Kauai and Oahu with altered wings, which they would normally rub together to chirp and attract females. New findings published in the journal Current Biology show that the wing changes are physically different and arose from separate mutations. This makes the silent crickets a brand new example of ‘convergent evolution’.” – and some really rapid evolution!

Microbes May Drive Evolution of New Animal Species“[S]ymbiosis — a long-term, stable and often beneficial interaction between organisms — could drive two populations apart, the first step in the development of new species. Although the idea has been floating around for nearly a century, it has only recently begun to gain traction in biology. This idea contrasts sharply with the traditional picture of evolution, in which new species emerge either from geological isolation or from a relentless struggle for food and mates. According to this new hypothesis, a host organism’s microbes might trigger changes in mating and reproduction that begin to define two different populations.” – h/t charles!

you gotta read this!: Coincidental Killers“We assume that microbes evolved to attack humans when actually we are just civilian casualties in a much older war…. Many of the pathogens we fear most are mere tourists on the human body. Their real homes are oceans, caves, or soils. To understand them, we need to understand them within their natural ecology. Soil, for example, is an extreme habitat for a microbe: harsh and constantly changing. It can quickly oscillate from flood to drought, from scalding heat to freezing cold, and total darkness to intense solar radiation. It’s rife with other competing microbes, and crawling with hungry predators. We fear lions and tigers and bears; bacteria have to contend with phage viruses, nematode worms, and predatory amoebas. All of these conditions can lead to adaptations that make microbes accidentally suited for life in a human host. We are, after all, just another environment. A thick capsule that shields a microbe from dehydration could also shield it from our immune system. A spore that is adapted for travelling through the air can be easily inhaled into a respiratory tract.”

Genetically identical ants help unlock the secrets of larval fate“A young animal’s genes are not the only genes that determine its fate. The genetic identity of its caretakers matters too…. [A] team led by Serafino Teseo of the University of Paris 13 used the unique aspects of the [clonal] ants’ biology to test the indirect role genes play in shaping the future identity of larvae and whole colonies by looking at the interaction between larvae and adults. They did so by observing the success of two ant clones, A and B, in pure colonies or mixed together into chimeric colonies. They also swapped broods, so A adults raised B larvae and vice versa. It turned out that A and B larvae developed differently depending on whether A or B nurses raised them. Left alone, pure A colonies produced the most young after six generations, making them more successful than B. However, in mixed colonies, B did better because its larvae more frequently turned into large adults that specialize in egg-laying rather than smaller, foraging-focused individuals….” – h/t rolf muertter!

Mitochondrial DNA of first Near Eastern farmers is sequenced for the first time“According to conclusions, genetic affinities have been observed between the mitochondrial DNA of first Neolithic populations and the DNA of first Catalan and German farmers. This suggests that probably Neolithic expansion took place through pioneer migrations of small groups of population. Moreover, the two main migration routes — Mediterranean and European — might have been genetically linked. ‘The most significant conclusion — highlights Eva Fernández — is that the degree of genetic similarity between the populations of the Fertile Crescent and the ones of Cyprus an Crete supports the hypothesis that Neolithic spread in Europe took place through pioneer seafaring colonization, not through a land-mediated expansion through Anatolia, as it was thought until now….’ Other scientific studies had already provided signs of an alternative scenario of Neolithic spread in Europe different from the one through Anatolia. According to Turbón, ‘recent archaeological finds have proved that the Neolithic arrived to Cyprus around 10,600 years ago, some years after the first documentation of agricultural practices in the Near East.’ Architecture and burial models found in Cyprus’ sites are similar to the ones found in the Middle Euphrates basin, ‘that indicates a direct colonisation of these territories,’ highlights the author. ‘Besides, spatial interpolation of radiocarbon dates from different Neolithic sites in the Near East and Europe also suggests a first seafaring expansion through Cyprus,’ he concludes.” – orginal research article.

The Giant Rat of Sumatra and Sardinia and No True Sardinian – from greg cochran.

A twist in Austronesian origins“The Taiwanese origin of Austronesians is widely accepted. A new preprint confirms this theory, but adds a new twist to the story of Austronesian dispersals, as it seems that in their western expansion, Austronesians picked up some Austroasiatic ancestry. This means either that Austroasiatic speakers preceded them in islands where Austronesian languages are now spoken, or that the Austronesians picked up this kind of ancestry in the mainland before settling in the islands.” – from dienekes.

A new allele for blond hair“There is a widespread belief that whatever made Europeans fair-skinned also gave them their unique palette of hair and eye colors. In reality, fair skin has only a weak genetic linkage with either non-black hair or non-brown eyes.” – from peter frost. see also: A molecular basis for classic blond hair color in Europeans.

A Genetic Map of Fireworks in Time“French Canadians and Slavs are both cases of populations which were once relatively modest and began in a narrow delimited region, but now are quite expansive and numerous. In the case of the East Slavs the demographic expansion also entailed the absorption of numerous Uralic tribes, as well as later Turks. And this illustrates one of the major details which I think has characterized the genetic turnover of human populations: phase shifts from a relatively static one defined by isolation by distance gene flow across clinal gradiants, to a rapid expansion of a small subset, and the overlay of this component as a palimpsest over the underlying variation. In some cases the replacement is nearly total, as in the modern United States. In other cases, as among Great Russians, the Slavic affinities of this population, and its association with Poles and other groups are clear, but there was a non-trivial uptake of exogenous segments which might allow for a reconstruction of the prior genetic landscape. These changes occur over short periods, and are bright fireworks against the comparatively static firmament.” – from razib.

Male faces ‘buttressed against punches’ by evolution“A new theory suggests that our male ancestors evolved beefy facial features as a defence against fist fights. The bones most commonly broken in human punch-ups also gained the most strength in early “hominin” evolution. They are also the bones that show most divergence between males and females.” – h/t darwin evolution! – original research article.

Faster eye responses in Chinese people not down to culture“New research from University of Liverpool scientists has cast doubt on the theory that neurological behaviour is a product of culture in people of Chinese origin. Scientists tested three groups – students from mainland China, British people with Chinese parents and white British people – to see how quickly their eyes reacted to dots appearing in the periphery of their vision…. The findings, published in the journal PLoS One, revealed that similar numbers of the British Chinese and mainland Chinese participants made high numbers express saccades, with the white British participants made far fewer. Culturally the British Chinese participants were similar to their white British counterparts and different to the mainland Chinese students.”

Cultural differences in human brain activity: A quantitative meta-analysis“East Asians show enhanced activity underlying mentalizing and emotion regulation. Westerners show enhanced activity underlying self-reflection and emotional responses.”

Race could be a factor in head, neck cancer survival rates“The national survival rates for African-Americans diagnosed with head and neck cancer have not improved in the last 40 years despite advances in the treatment and management of the disease, researchers have found. The researchers suggest that inherent genetic factors in African-Americans may make some tumors resistant to treatments.”

Severe intellectual disability diagnosed by analysis of entire genome“[A]lmost all mental impairments are caused by new mutations that have not yet occurred in father or mother.” – h/t mr. robert ford!

New genes involved in food preferences will revolutionize diets and improve health“The researchers undertook genome wide association studies (GWAS) to try to unravel the genetic basis for certain food preferences. 2311 Italian subjects participated in the discovery step, while 1755 from other European countries and from Central Asia were used in order to further verify the findings. They uncovered 17 independent genes related to liking for certain foods, including artichokes, bacon, coffee, chicory, dark chocolate, blue cheese, ice cream, liver, oil or butter on bread, orange juice, plain yoghurt, white wine and mushrooms. Surprisingly, none of the genes thus identified belonged to the category of taste or smell receptors…. In a second study, the researchers amassed the response of around 900 healthy adults from North Eastern Italy to salt, and related this to a DNA sequence variation found on the KCNA5 gene, known to be related to taste pathways in mammals.”

First direct evidence for human sex pheromones“‘By using dynamic point-light displays that portray the gaits of walkers whose gender is digitally morphed from male to female, we show that smelling androstadienone systematically biases heterosexual females, but not males, toward perceiving the walkers as more masculine. By contrast, smelling estratetraenol systematically biases heterosexual males, but not females, toward perceiving the walkers as more feminine. Homosexual males exhibit a response pattern akin to that of heterosexual females, whereas bisexual or homosexual females fall in between heterosexual males and females. These effects are obtained despite that the olfactory stimuli are not explicitly discriminable. The results provide the first direct evidence that the two human steroids communicate opposite gender information that is differentially effective to the two sex groups based on their sexual orientation.'” – @deric bownds’ mindblog.

Genetic relatedness predicts contact frequencies with siblings, nieces and nephews: Results from the Generational Transmissions in Finland surveys“Individuals have more contacts with full than with half siblings. Individuals have more contacts with nieces/nephews via full than via half siblings. Individuals have more contacts with nieces/nephews via sisters than via brothers.” – h/t jayman!

Beware Armchair Psychoanalysis“‘Behavioral genetic studies have proved beyond a shadow of a doubt that heredity is responsible for a sizable portion of the variations in people’s personalities. Some people are more hot-tempered or outgoing or meticulous than others, and these variations are a function of the genes they were born with as well as the experiences they had after they were born. The exact proportion— how much is due to the genes, how much to the experiences—is not important; the point is that heredity cannot be ignored.'” – from jayman (quoting judith rich harris there).

SD-IE and other differentiation effects in Italy and Spain [pdf] – “SD–IE [strategic differentiation–integration effort] is a strategic differentiation effect present amongst indices of life history (LH), such that persons and populations of slow LH are more differentiated compared to those of fast LH. We found that this phenomenon is present amongst provinces in Italy and Spain, similarly to demonstrations among US states and Japanese prefectures. The average effect size of SD–IE was found to be bigger in Spain and Italy….. In the present study, we test SD–IE using regional-level data for counties in Spain and Italy.”

Is the smart fraction as valuable as previously thought?“‘Consistent with the intellectual class theory advocated by Rindermann and Thompson (2011) and Rindermann et al. (2009), our research findings showed strong evidence that those people that have high IQ are the most relevant influence on economic development. Although our results suggested that all three examined IQ categories promote higher economic growth, the intellectual class has the highest impact followed by the mean ability and non-intellectual classifications. Similarly, the intellectual class also has a highly significant effect on generating technological progress, whereas the influence of the other two groups is immaterial.'” – @dr. james thompson’s blog.

HVGIQ: Burma and HVGIQ: U.S. Virgin Islands – from jason malloy.

Life unworthy of life – post about, as jayman put it, who supports eugenics. – from the awesome epigone.

The Biology of Risk“The state of your body predicts your appetite for financial risk just as it predicts an athlete’s performance. If we understand how a person’s body influences risk taking, we can learn how to better manage risk takers. We can also recognize that mistakes governments have made have contributed to excessive risk taking.”

We can’t ignore the evidence: genes affect social mobility“Why do so many people fail to accept the overwhelming evidence that genes contribute to academic achievement and thereby social status?” – h/t hbd bibliography!

India’s Feudal Rapists

Old chaps? 3,300-year-old trousers found in China may be world’s oldest“Animal-fur menswear found on the bodies of two mummies in Xinjiang province ‘almost the same shape as today’s trousers'”

Grave find may be Western Europe’s earliest false tooth“Archaeologists have identified what could be remains of the earliest false tooth found in Western Europe. The dental implant comes from the richly-furnished timber burial chamber of an Iron Age woman that was excavated in Le Chene, northern France.”

Cat People Are Smarter Than Dog People, New Study Shows – (~_^) – ftr, i like both. i’m not a speciesist!

bonus: Blind cavefish are able to ‘count’“Blind cave-dwelling fish are able to discriminate between different quantities, scientists say…. Researchers say it is the first time non-visual numerical abilities have been shown in fish.” – h/t mo costandi!

bonus bonus: Bees build mental maps to get home“Study suggests the insects do not rely solely on the Sun as a compass…. ‘The surprise comes for many people that such a tiny little brain is able to form such a rich memory described as a cognitive map,’ says co-author Randolf Menzel, a neurobiologist at the Free University of Berlin.”

bonus bonus bonus: Nemo’s Dad Should Have Become His Mom, And Other Lies Children’s Movies Told You – h/t steve stewart williams!

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Oxytocin helps explain difference in social perception between men and women“‘The Love Hormone’, Oxytocin affects men and women differently in social contexts — in men it improves the ability to identify competitive relationships whereas in women it facilitates the ability to identify kinship.”

Watching Bacteria Evolve, With Predictable Results“[I]n experiments using bacteria and other fast-breeding organisms, scientists can replay evolution many times over in their labs. And the results of a new experiment published Thursday in the journal Cell Reports demonstrate — with movies — that evolution can be astoundingly predictable.”

Facial contrast and femininity“Women have higher luminous contrast between their facial skin and their lip/eye color. This contrast effect is influenced not only by degree of lightness but also by degree of redness.” – from peter frost.

Caste“An endogamous group that is exposed to unusual selective pressures – say because of their occupation – is going to change in response to those particular selective pressures.” – from greg cochran.

Cultural influences on IQ – from elijah armstrong.

Human cells respond in healthy, unhealthy ways to different kinds of happinessEudaimonic well-being was, indeed, associated with a significant decrease in the stress-related CTRA gene expression profile. In contrast, hedonic well-being was associated with a significant increase in the CTRA profile.”

Even George W. Bush Has Heart Disease“Contrary to what we’ve been led to believe, it is possible – and indeed quite likely – that heart disease is an inevitable consequence of living. In other words, lifestyle, including what you eat, drink, where you work, how much you work out, etc, may have little to nothing to do with your chances of developing heart disease.” – from jayman. (the most surprising thing that i learned from this post is that george w. bush actually has a heart! (~_^) )

Students Today “Hook Up” No More Than Their Parents Did in College

Rare footage of isolated Amazon tribe released“A newly released video captures images of the Kawahiva tribe, indigenous people living in Brazil’s Amazon jungle thought to have had very little contact with the outside world.”

World’s oldest temple built to worship the dog star“THE world’s oldest temple, Göbekli Tepe in southern Turkey, may have been built to worship the dog star, Sirius.”

These Carvings Are the Oldest Rock Art in America, by Thousands of Years“‘The true age of this rock art had not been known, but a new analysis suggests these petroglyphs are the oldest North America, dating back to between 10,500 and 14,800 years ago.’ The rocks occupy a spot in the Nevada desert once covered by Winnemucca Lake.”

Oldest Gaming Tokens Found in Turkey“Small carved stones unearthed in a nearly 5,000-year-old burial could represent the earliest gaming tokens ever found, according to Turkish archaeologists who are excavating early Bronze Age graves.” – they’re really neat!

Good-looking birds: Sexual attractiveness in the wild turkey“[A]ttractiveness in male turkeys is more a function of how they use their genes, rather than differences in the genes themselves.”

bonus: Britain’s biggest child sex grooming gang thought to have been busted after cops arrest 45 men – here we go again. =/

bonus bonus: Olinguinto: ‘Overlooked’ mammal carnivore is major discovery

bonus bonus bonus: Moment thief was caught on camera stealing village ‘honesty box’ to pay for homegrown fruit and veg – this happened in south wales and the thief was a guy named paul bujega bujega.

bonus bonus bonus bonus: Scientists Finally Pronounce Human Genome“‘It’s Gatcaatgaggtggacaccagaggc…’”

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Questions you never thought to ask: Is inbreeding bad for democracy? – i thought to ask. so did a few other people (way before me!): steve sailer, stanley kurtz, parapundit. see also Cousin Marriage and Democracy. and, of course, see also woodley and bell. and see Question of the Day @breviosity. previously: consanguinity and democracy.

A Dose of Clannishness and What’s So Bad About Clanocracy? – @breviosity!

Where do those tensions come from?“When the Milgram experiment was done with Jordanian assistants, they were just as willing as Americans to inflict pain under orders (62.5%). But they were more willing than Americans [1.4%] to inflict pain when no orders were given, with 12.5% of them delivering shocks right up to the top end of the scale (Shanab & Yahya, 1978).” – great post from peter frost!

Modern Europe’s Genetic History Starts in Stone Age“Scientists create the first detailed genetic history of modern Europe.” – original research article. see also mtDNA haplogroup H and the origin of Europeans (Brotherton et al. 2013) from dienekes.

As women live longer and have fewer children, they are becoming taller and slimmer, study finds“‘This is a reminder that declines in mortality rates do not necessarily mean that evolution stops, but that it changes.'”

Birth Defects, FBD Marriages – from anatoly.

HBD Fundamentals – from jayman!

Why the Tropics are an evolutionary hotbed“Ant family tree shows tropical New World hosts fast speciation while also keeping older lineages alive.”

Study: People Who Believe in God Are More Responsive to Treatment of Depression“It may be that ‘the tendency to have faith in conventional social constructs’ can be generalized both to religion and the medical establishment.”

Beauty isn’t skin deep – @mangan’s.

Social psychology fraud: Just tell professors what they want to hear – from steve sailer.

Book Review: Quiet – The Power of Introverts in a World That Can’t Stop Talking (2012) by Susan Cain – from staffan. and a classic: Caring for Your Introvert. (just shush already! (~_^) )

Ethnic origins of Forbes world billionaires (2013) – @race/history/evolution notes.

Computer scientists suggest new spin on origins of evolvability“‘[E]volvable species accumulate over time even without selective pressure.'” – in their computer simulations.

Culture — Not Just a Human Thing – vervet monkeys got culture. also Parrots Barter With Nuts.

Humans Evolved Flexible, Lopsided Brains – some of us more lopsided than others. (~_^)

When Do Babies Become Conscious?“New research shows that babies display glimmers of consciousness and memory as early as 5 months old.”

Fish win fights on strength of personality“When predicting the outcome of a fight, the big guy doesn’t always win suggests new research on fish.”

Feeding our gut bacteria meat may enhance heart disease risks“Antibiotics or vegetarian diets block production of a risk-associated chemical.”

On Hold: Genes That Pause Pregnancy Discovered

Giza Secret Revealed: How 10,000 Pyramid Builders Got Fed“This meat-rich diet, along with the availability of medical care (the skeletons of some workers show healed bones), would have been an additional lure for ancient Egyptians to work on the pyramids…. ‘They probably got a much better diet than they got in their village….'”

Earliest Mayan monuments unearthed in Guatemala. see also Ancient Maya discovery sheds new light on the origins of civilization.

bonus: Levels of Commitment to the Dark Enlightenment – @habitable worlds. also What are characteristics of the Dark Enlightenment? @occam’s razor.

bonus bonus: How Cuban Villagers Learned They Descended From Sierra Leone Slaves“The amazing story of the traditional songs and dances, passed down over hundreds of years, that have tied a small Caribbean ethnic group to a remote African tribe.” – cool story!

bonus bonus bonus: Revealed: The Indian village with just 6,000 inhabitants … but more than 100 pairs of twins – another town of twins!

bonus bonus bonus bonus: Can Animals Be Mentally Ill?

bonus bonus bonus bonus bonus: not a news story, but here’s the definition of stubborn – Last Two Speakers of Dying Language Refuse to Talk to Each Other

bonus bonus bonus bonus bonus bonus: Thanks to rare alpine bacteria, researchers identify one of alcohol’s key gateways to the brain“Discovery is a step on the road to eventually developing drugs that could disrupt the interaction between alcohol and the brain.” – cool! wait. they want to disrupt the effect of alcohol on the brain?! hey!

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Low-hanging fruit?“We need to go beyond intelligence and look at genetic differences that may underlie variation in personality traits, regulation of emotions, time orientation, and so forth. There is more to being human than just intelligence. – yes!! (^_^) – from peter frost.

this is kinda old (from jan) but i just came across it: Variants at serotonin transporter and 2A receptor genes predict cooperative behavior differentially according to presence of punishment“We show that variants at the serotonin transporter gene (SLC6A4) and serotonin 2A receptor gene (HTR2A) predict contributions to the public good in economic games, dependent upon whether contribution behavior can be punished.”

Genetic Influences on the Overlap Between Low IQ and Antisocial Behavior in Young Children“Genetic influences common to both phenotypes explained 100% of the low IQ–antisocial behavior relation in boys.” – via race/history/evolution notes.

Monkeys Stay Away from Mean People“Capuchin monkeys show biases against humans who deny help to others.”

Genetic study of house dust mites demonstrates reversible evolution

Do species exist? – from steve sailer.

Fungus, Get Off My Lawn!“Virginia wildrye, common on U.S. prairies and rangelands, often plays host to a fungus that helps this grass grow. But the plant pays a price. Researchers have discovered that infected plants produce less pollen than their noninfected counterparts. Instead, the fungus causes the rye grass to make extra seeds, which transmit the fungus to the next generation and new locations. This is the first time a fungus has proven capable of manipulating plant reproduction.” – manipulator!

E. O. Wilson vs. Jerry Coyne: The Group Selection Wars Continue – from helian.

Pathogens: Cause or Effect of Social Variation?

Can People’s Personalities Change?“[P]ersonality was the strongest predictor of satisfaction with life. This is well-established and helps explain why some people have everything and are never satisfied and some people have next-to-nothing and seem quite happy with life. It’s not just what you have that makes you satisfied (or not), it’s how you think about it. And those habits of thought are heavily influenced by personality.”

Difficult Thoughts“It’s depressing to see how irrational we are so much of the time, but there it is.” – from malcolm pollack.

The Shape of History“Ian Morris, historian on a grand scale.”

bonus: Mystery bug found in Antarctica’s Lake Vostok“There is something alive in Lake Vostok, deep beneath the East Antarctic ice sheet, and we don’t know what it is. Water samples from the lake contain a bacterium that does not seem to belong to any known bacterial groups….”

bonus bonus: The Dark Enlightenment and the Eco Fringe – paleo retiree goes all hippie on us. (~_^) (i’ll confess right now to being a tree hugger myself.)

bonus bonus bonus: foseti’s drunken rant – i love drunken rants! (~_^) (this one actually makes sense!)

bonus bonus bonus bonus: Only the toughest would survive on Tatooine worlds – h/t hbd bibliography!

bonus bonus bonus bonus bonus: Butt munchers“[S]ea cucumbers can eat through their anuses.”

(note: comments do not require an email. sea cucumber – i don’t know if that’s the front end or the back….)

(sorry. the dog ate my sunday linkfest….)

And Yet Another Tale of Two Maps – from jayman.

Why are girls and boys maturing earlier? – from peter frost.

When Did Humans Come to the Americas?

Large study shows substance abuse rates higher in teenagers with ADHD“When the adolescents were an average of 15 years old, 35 percent of those with ADHD histories reported using one or more substances, as compared to only 20 percent of teens without ADHD histories.”

Tribal societies and war – from mangan.

Crime and Twins – from dienekes.

HVGIQ: Cayman Islands – from jason malloy.

Evil Genes and the Long Dark Tea Time of the Soul – @bad data, bad!

Digging Deep in the DNA“‘I think I’m one of the few people,’ she said, ‘who have taken the rectal temperature of a grizzly bear.'”

Men are from Mars Earth, women are from Venus Earth“That men and women approach their social world similarly does not imply that there are no differences in average scores between the sexes. Average differences do exist, write the authors.” – yes, average differences do exist.

Exercise linked with reduced prostate cancer risk in Caucasians but not African-Americans“Studies have also revealed that African-American men have an increased risk of developing prostate cancer and of dying from the disease compared with Caucasians.”

Gene today, gone tomorrow: Genes for autism and schizophrenia only active in developing brains“Genes linked to autism and schizophrenia are only switched on during the early stages of brain development, according to a study in mice led by researchers at the University of Oxford.” – curioser and curioser….

The Lab Accident That Led to the Discovery of Supertasters“A cloud of chemicals. One researcher detects a smell. The other does not. What happens next? Science.”

So THAT’s why women’s feet and hands are always cold! Why they are slaves to their hormones

On Genteels – @bloody shovel.

Oral Mystery: Are Agriculture and Rats Responsible for Tooth Decay?“Tooth decay is a relatively modern problem. The bacteria feasting on your teeth might have originated in the mouth of a rodent, and found their way to our teeth, thanks to agriculture.”

bonus: ‘Google for spies’ draws ire from rights groups

bonus bonus: ‘It’s a boy!’ Monkey midwife delivers baby

bonus bonus bonus: What Are Dogs Saying When They Bark? [Excerpt]“Experiments have now shown that dogs use different barks and growls to communicate different things.” – see also: Your dog really does understand you… They’re more likely to steal food if they think you can’t see, research reveals.

bonus bonus bonus bonus: Pigeons Get a New Look“Pigeons, a Darwin favorite, carry new clues to evolution.”

bonus bonus bonus bonus bonus: Do plants ‘veto’ bad genes?“Latest evidence fails to quell doubt about whether plants can access “ancestral” genes outside their parents'”

bonus bonus bonus bonus bonus bonus: Face-to-face with the earliest ancestor of all placental mammals

bonus bonus bonus bonus bonus bonus bonus: Penicillin Mold Can Reproduce Sexually, Which Could Lead to Better Antibiotics“Penicillin-producing fungus, previously thought to be asexual, has a sexual side. The finding is the latest in a kind of sexual revolution in fungal genetics.”

bonus bonus bonus bonus bonus bonus bonus bonus: Fast Food Robot Builds the Perfect Burger – won’t need mexicans for flipping burgers anymore.

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Finland & Japan – exceptions to “the rule”? – from jayman!

Genetic pacification in medieval Europe – from peter frost!

Scientists May Have Finally Unlocked Puzzle of Why People Are Gay – an epigenetic cause of gayness?

Restless Genes – drd4.

Reconstructed Face of Extinct “Hobbit” Species Is Startlingly Humanlike

Polymorphisms and Load – (more stuff i barely understand) from greg cochran!

Penn Study shows resistance to cocaine addiction may be passed down from father to son – in rats anyway.

Where to be born vs. where people are being born – from the awesome epigone!

The mu opioid receptor genotype may be a marker for those who drink for alcohol’s rewarding effects – OPRM1.

bonus: Lead poisoning in Samurai kids linked to mom’s makeup

bonus bonus: OU Study Suggests the Bacterial Ecology That Lives on Humans Has Changed Dramatically in the Last 100 Years

bonus bonus bonus: Microbiome: Cultural differences“Studies of gut bacteria are beginning to untangle how diet affects health in old age — but determining cause and effect is tricky.”

bonus bonus bonus bonus: Art of cheese-making is 7,500 years old

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a day late. sorry! sometimes sh*t just happens. (~_^)

Ethnic disparities in breast cancer survival remain despite socioeconomic similarities“All-cause survival was worse for African-Americans and better for Latinas and Asian-Americans compared with non-Latina whites after adjusting for age, study and tumor characteristics. When the researchers additionally adjusted for treatment and reproductive and lifestyle factors, they found that African-Americans had similar survival rates to non-Latina whites, but the survival rates of Latinas and Asian-Americans remained better.”

Diversity may be fatal, says new government health study“[P]eople suffer less cancer and heart disease when they live among their racial or ethnic peers.” – via mangan’s.

If Smart Is the Norm, Stupidity Gets More Interesting“Human intelligence varies.” – you don’t say?! (it’s in the nyt, believe it or not!)

Do Intelligent People Drink More Alcohol? – yes. yes, we do. (*hic*)

A detour through Europe?“The lithic technology of southwestern France (c. 22,000-17,000 BP) strangely resembles that of the first paleo-Amerindians (c. 12,000). Some people speculate that early Europeans reached North America by crossing the Atlantic. The truth is even more incredible. Early Europeans spread eastward and became the ancestors not only of the Amerindians but also of East Asians.” – from peter frost.

Secular change in the B/W IQ gap (in the US) – from chuck. see also steve sailer.

Penis size and infant mortality – from the autistic nerdling epigone.

Placebo effect may be ‘down to genes’“Those with a particular version of the COMT gene saw an improvement in their health after placebo acupuncture.”

The Evolution of Female Bisexuality – from jayman.

Pitch Perfect: It’s All In The Genes” – maybe/prolly. see also you, too, can have perfect pitch!

Hispanic Bio-Diversity: A Primer – from nelson.

Smoking causes asthma in second generation offspring – epigenetic effects in rats.

Epigenetic inheritance is a wild goose chase“Epigenetics matters, but not between generations.”

Appearance-based politics: Sex-typed facial cues communicate political party affiliation – republican women more feminine looking than democrat women.

Men better multi-taskers than women: study

Who Would Win in a Fight: a Modern Human or a Neanderthal?“We beat them at evolution. But what about fisticuffs?”

The Island Where People Forget to Die“[P]eople on Ikaria were, in fact, reaching the age of 90 at two and a half times the rate Americans do. (Ikarian men in particular are nearly four times as likely as their American counterparts to reach 90, often in better health.) But more than that, they were also living about 8 to 10 years longer before succumbing to cancers and cardiovascular disease, and they suffered less depression and about a quarter the rate of dementia.”

bonus: More Intelligent Birds (Like More Intelligent Humans) Have Evolutionarily Novel Preferences

bonus bonus: Electric Bugs: New Microbe Forms Living, Deep-Sea Power Cables

bonus bonus bonus: New study sheds light on how and when vision evolved“Opsins, the light-sensitive proteins key to vision, may have evolved earlier and undergone fewer genetic changes than previously believed….”

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Welsh people could be most ancient in UK, DNA suggests

Genomics and African queens“[The researchers] found that the genomes of some Ethiopian populations bear striking similarities to those of populations in Israel and Syria, a potential genetic legacy of the Queen of Sheba and her companions.”

Opiate of the Male Masses“How big of a problem, really, does pornography cause for men?” – from dennis mangan.

Study suggests poor mothers favor daughters“Poor mothers will invest more resources in daughters, who stand a greater chance of increasing their status through marriage than do sons…. On the contrary, mothers who were better off financially favored sons over daughters.” – an example of the trivers-willard hypothesis. research article. h/t linton! (^_^)

Liberalism rankings by country – from the audacious epigone.

Study Finds People Who Believe In Heaven Commit More Crimes“A study published in the scientific journal PLoS One by University of Oregon’s Azim Shariff and University of Kansas’s Mijke Rhemtulla finds that people who believe in hell are less likely to commit a crime while people who believe in heaven more likely are to get in trouble with the law.” – i thought the concepts of heaven and hell usually went together?

Declining testosterone levels in men not part of normal aging, study finds“‘Men who had declines in testosterone were more likely to be those who became obese, had stopped smoking or were depressed at either clinic visit.'”

bonus: Never-before-seen microbes found in Chile’s desert

bonus bonus: All 786 Known Planets To Scale – from xkcd. (^_^)

bonus bonus bonus: EU should ‘undermine national homogeneity’ says UN migration chief“Peter Sutherland told peers the future prosperity of many EU states depended on them becoming multicultural.”

bonus bonus bonus bonus: Jogging in forest twice as good as trip to gym for mental health

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