linkfest – 10/19/15

First humans to leave Africa went to China, not Europe“The first humans to leave Africa decamped to far east Asia, not Europe. A trove of ancient teeth found in a cave in China adds evidence to the idea that humans reached the region thousands of years before they made it to Europe. The find suggests that modern humans reached China between 80,000 and 120,000 years ago. That challenges the widespread assumption that humans didn’t leave Africa until 60,000 years ago. It’s further evidence that Homo sapiens may have left Africa several times, says María Martinón-Torres of University College London. ‘It means we have to re-think different models of our dispersal.'” – and john hawks tweeted: “An 80kya modern human population in SE Asia w/Denisovan ancestry might help explain pattern of admixture in Philippines Mamanwa.”

Way Down South“I hear (tweets by Razib Khan, concerning Sankararaman’s talk at ASHG) that the Denisovans had substantially more genetic diversity than Neanderthals (determined mainly by the variety seen in admixed segments)….” – from greg cochran.

Lactase persistence and ancient DNA“‘…it seems plausible to me that the [European LP] allele first appeared in Central Europe, was spread around Europe by the LBK, before being introduced to the steppe later by migration from Europe.'”

Stonehenge builders had barbecue feasts at nearby party centre – and milk and cheeeeeese!

Basques are not simply a fusion of Iberian hunter-gatherers and early farmers“[T]he story told by the PCA is that Basques are the progeny of Bronze Age Iberians, who, unlike their Copper Age predecessors, experienced a pulse of steppe-related admixture from the east…. The key question now is who brought the steppe-related ancestry to Basque country. Were they Indo-Europeans or speakers of Proto-Basque?”

Sex‐specific demography and generalization of the Trivers–Willard theory – h/t owen jones! who tweeted: “Can mothers adaptively adjust offspring sex ratio? It’s complicated….”

The Great Migration and African-American genomic diversity“We find higher African ancestry in southern United States compared to the North and West. We show that relatedness patterns track north- and west-bound routes followed during the Great Migration, suggesting that admixture occurred predominantly in the South prior to the Civil War and that ancestry-biased migration is responsible for regional differences in ancestry. Rare genetic traits among African-Americans can therefore be shared over long geographic distances along the Great Migration routes, yet their distribution over short distances remains highly structured.”

Connectivity matrix predicts fluid intelligence“The enchanted loom is slowly giving up its secrets, of which it holds many. The patterns of brain activity that so many researchers have tracked with wonder are beginning to reveal a larger pattern: the possibility that each of us has a habitual pattern of brain activity which identifies us, and distinguishes us from others. So, dear reader, we are separated by the idiosyncratic rhythms of our brains, dancing to a different beat, visiting a different pattern of cortical locations, and no doubt coming to different conclusions…. The unexpected finding which I find startling is that individuals can be identified by their habitual brain patterns (not just on specific tasks) and those patterns of activity predict fluid intelligence on Raven’s Matrices at about r=0.5.” – from dr. james thompson.

Meta-analysis of associations between human brain volume and intelligence differences: How strong are they and what do they mean?“Positive associations between human intelligence and brain size have been suspected for more than 150 years…. Our results showed significant positive associations of brain volume and IQ (r = .24, R2 = .06) that generalize over age (children vs. adults), IQ domain (full-scale, performance, and verbal IQ), and sex…. We show that the strength of the positive association of brain volume and IQ has been overestimated in the literature, but remains robust even when accounting for different types of dissemination bias, although reported effects have been declining over time.”

Correlation not Causation: The Relationship between Personality Traits and Political Ideologies“Here we test the causal relationship between personality traits and political attitudes using a direction of causation structural model on a genetically informative sample. The results suggest that personality traits do not cause people to develop political attitudes; rather the correlation between the two is a function of an innate common underlying genetic factor.” – h/t robin hanson!

Generalised Anxiety Disorder – A Twin Study of Genetic Architecture, Genome-Wide Association and Differential Gene Expression“A heritability analysis of the same cohort also confirmed a significant genetic component with h2 of 0.42.” – h/t siberian fox! – and jayman tweeted: “I suspect anxiety is more common in some places than others. Perhaps due to genetic pacification.”

A Unified Crime Theory: The Evolutionary Taxonomy“Drawing on a variety of influences, we argue that many types of crime can be understood in the evolutionary context of human life history. Along these lines, we present a framework capable of explaining different patterns of criminal offending both at the individual level as well as the macro-level.” – from brian boutwell et al.

Resting heart rate and antisocial behavior: An updated systematic review and meta-analysis“Low resting heart rate was associated with higher levels of antisocial behavior…. Results were similar across behaviors, including aggression and violence.” – h/t anthony hoskin!

The association between childhood autistic traits and adolescent psychotic experiences is explained by general neuropsychiatric problems – from amir sariaslan et al. amir tweeted: “The ‘p factor’ explains assoc’s btwn childhood autistic traits and adolescent psychotic experiences.”

The Flynn Effect: IQ Testing Across Space and Time – from steve sailer.

What Extroverts and Introverts Can Learn From Snails“Genes may change a snail’s ‘personality’ and the thickness of its skin (or rather, its shell)”

Dimensional assessment of normal and abnormal personality in adults of the general population: Comparison of ‘five’ and ‘alternative five’ personality models – h/t andrew sabisky! who tweeted: “are normal and pathological personality all part of one continuum?”

So what if grammars don’t help social mobility?“On the Today programme and the New Statesman website, a statistic was quoted showing that grammar schools have a smaller percentage of pupils on free school meals than comprehensives. There are probably many reasons for this, but most likely the largest factor involved is that intelligence is hereditary and social class correlates with IQ; in other words, middle-class kids tend on average to be more intelligent than working-class ones. You could make the system fairer by replacing grammar entrance exams (for which richer parents hire tutors to help their children pass) with straight-up IQ tests, but the number of poorer children would still be disproportionately low. In fact the more social mobility we have over the generations, as everyone seems to want, the more that social class will correlate with intelligence. Richard Herrnstein pointed this out more than four decades ago. Many years earlier, Michael Young warned about this very process in The Rise of the Meritocracy. Social mobility does have its downsides; that’s because intelligence is just another privilege you inherit from mummy and daddy.” – from ed west.

The economic value of Breaking Bad: How misbehavior in school pays off for some kids“Surprisingly, we find evidence that some non-cognitive skills that manifest as childhood misbehavior in the classroom (and are predictive of lower schooling attainment) are also predictive of higher earnings later in life.”

A social science without sacred values“We argue (1) that many social scientists are paranoid egalitarian meliorists; (2) that they are therefore very sensitive to threats to a sacred egalitarian narrative; (3) that this sensitivity may be excessive (at least in the domain of science) and may cause researchers to unfairly reject research that challenges egalitarianism; (4) that this may then lead to the marginalization of individuals who forward controversial theories and/or data; and (5) that these tendencies lead to bias in the social sciences.” – from the winegard bros.

Social Status: Down the Rabbit Hole – h/t billare! who tweeted: “There are two systems of social status: Dominance & Prestige. For what selfish reasons might the latter one evolve?” – this was a really interesting read, btw.

Why Drunk Vegetarians Eat Meat – h/t jonathan haidt! who tweeted: “…esp. health vegs; moral vegs feel more disgust.”

Shame, guilt, and facial emotion processing: initial evidence for a positive relationship between guilt-proneness and facial emotion recognition ability“Guilt-prone people are highly skilled at recognising other people’s emotions.” [via] – w.e.i.r.d. study. pretty small n.

Gamblers, Scientists and the Mysterious Hot Hand“We’re all in the same boat. We evolved with this uncanny ability to find patterns. The difficulty lies in separating what really exists from what is only in our minds.” – h/t claire lehmann!

Dobzhansky and Montagu’s Debate on Race: The Aftermath

The Mutant Genes Behind the Black Death“Only a few genetic changes were enough to turn an ordinary stomach bug into the bacteria responsible for the plague.”

The End of Indian Summer“At first, human rights commissions fought discrimination only in employment and housing, and there was strong resistance to prosecution of people simply for their ideas. This situation changed from the 1970s onward. Human rights took the place in society that formerly belonged to religion, and human rights advocates acquired the immunity from criticism that formerly belonged to the clergy. Discrimination was no longer wrong in certain cases and under certain circumstances. It became evil, and people who condoned it in any form and for any reason were likewise evil.” – from peter frost.

Is Eastern Europe Any More Xenophobic Than Western Europe? – yes. but france is an exception in the west.

bonus: superforecasting conference on october 24th, if you happen to be in or near london: Superforecasting and Geopolitical Intelligence- Who can Predict the Future, and how?

bonus bonus: Did photosynthesis begin 3.2 billion years ago?“Rusty rocks from ancient ocean suggest bacteria produced oxygen far earlier than thought.”

bonus bonus bonus: The Beetle That Eavesdrops on an Ant’s Secret Language“A beetle evolves to ‘listen in’ on ants’ chemical messages to one another, changing the balance of an ecosystem.” [via]

bonus bonus bonus bonus: Ants con others into being their slaves by mimicking their scent

bonus bonus bonus bonus bonus: Sticky situation: maple syrup bandits face Quebec courts for infamous heist“Trials are under way for the 2012 attempt to steal $18m worth of Quebec’s sweetest export – a case that has succeeded in capturing Hollywood’s attention.”

bonus bonus bonus bonus bonus bonus: Pop Culture Pulsar: The Science Behind Joy Division’s Unknown Pleasures Album Cover

and the tweet of the week… (^_^)

(note: comments do not require an email. cheeeeeese!)


linkfest – 10/11/15

Ancient Ethiopian genome reveals extensive Eurasian admixture throughout the African continent“Here, we present a 12.5x coverage ancient genome of an Ethiopian male (‘Mota’) who lived approximately 4,500 years ago. We use this genome to demonstrate that the Eurasian backflow into Africa came from a population closely related to Early Neolithic farmers, who had colonized Europe 4,000 years earlier. The extent of this backflow was much greater than previously reported, reaching all the way to Central, West and Southern Africa, affecting even populations such as Yoruba and Mbuti, previously thought to be relatively unadmixed, who harbor 6-7% Eurasian ancestry.” – h/t john hawks! who tweeted: “First ancient DNA from Ethiopia shows that today’s sub-Saharan Africans are at least 0.2-0.7% Neanderthal ancestry!” – see also: First Ancient African Genome Reveals Vast Eurasian Migration“The man’s genome is, unsurprisingly, more closely related to present-day Ethiopian highlanders known as the Ari than to any other population the team examined, suggesting a clear line of descent for the Ari from ancient human populations living in the area. But further genetic studies show that the Ari also descend from people that lived outside Africa, which chimes with a previous study that discovered a ‘backflow’ of humans into Africa from Eurasia around 3,000 years ago.”

Eight thousand years of natural selection in Europe“The arrival of farming in Europe around 8,500 years ago necessitated adaptation to new environments, pathogens, diets, and social organizations…. We identify genome-wide significant signatures of selection at loci associated with diet, pigmentation and immunity, and two independent episodes of selection on height…. These results suggest that the modern South-North gradient in height across Europe is due to both increased steppe ancestry in northern populations, and selection for decreased height in Early Neolithic migrants to southern Europe. “

The Hybrid Origin of “Modern” Humans“Recent genomic research has shown that hybridization between substantially diverged lineages is the rule, not the exception, in human evolution. However, the importance of hybridization in shaping the genotype and phenotype of Homo sapiens remains debated. Here we argue that current evidence for hybridization in human evolution suggests not only that it was important, but that it was an essential creative force in the emergence of our variable, adaptable species.”

Neanderthal ‘flower children’ burials theory debunked“New research casts doubt on the idea that Neanderthals buried their dead covered in flowers.”

Intelligence in youth and health at age 50“Higher intelligence in youth is linked with better physical health at age 50.” – h/t andrew sabisky!

Chorionicity and Heritability Estimates from Twin Studies: The Prenatal Environment of Twins and Their Resemblance Across a Large Number of Traits“There are three types of monozygotic (MZ) twins. MZ twins can either share one chorion and one amnion, each twin can have its own amnion, or MZ twins can—like dizygotic twins—each have their own chorion and amnion. Sharing the same chorion may create a more similar/dissimilar prenatal environment and bias heritability estimates…. We conclude that the influence on the MZ twin correlation of the intra-uterine prenatal environment, as measured by sharing a chorion type, is small and limited to a few phenotypes.”

Genetic transmission of reading ability – h/t steve stewart williams! who tweeted: “If you want your kids to read, your best bet is to have kids with a reader.”

It All Began at Ararat, and Esau’s Revenge“Ancient DNA in Europe strongly indicates massive replacement [of hunter-gatherers by agriculturalists]. But, there is also suggestion of admixture with the local substrate. And, unlike the stylized model of Bellwood, it seems that there were multiple migrations after the initial pulse which reshaped the genetic and cultural landscape of human societies in the wake of agriculture.” – from razib.

Closing the Black-White IQ Gap Debate, Part I – from chanda chisala. and a response from peter frost: No, blacks aren’t all alike. Who said they were? – and previously on this blog: there’s more to human biodiversity than just racial differences.

The Association of Cognitive Ability with Right-wing Ideological Attitudes and Prejudice: A Meta-analytic Review“The present meta-analyses revealed an average effect size of r = −.20 [95% confidence interval (95% CI) [−0.23, −0.17]; based on 67 studies, N = 84 017] for the relationship between cognitive ability and right-wing ideological attitudes and an average effect size of r = −.19 (95% CI [−0.23, −0.16]; based on 23 studies, N = 27 011) for the relationship between cognitive ability and prejudice.”

[male] Chimps like boys toys too“If you want to know why young boys play with toy guns, you could do worse than consider why young male chimpanzees play with leaves and stones.” – h/t darren burke! who tweeted: “Western social constructivism is so insidious and widespread it is even affecting wild chimpanzees now!” – (~_^)

Ravens cooperate, but not with just anyone“Ravens detect cheaters in cooperation.”

Understanding the Cognitive and Genetic Underpinnings of Procrastination: Evidence for Shared Genetic Influences With Goal Management and Executive Function Abilities – procrastination (at least) 28% heritable. will have to read original paper. tomorrow, maybe. (~_^)

Personality Traits Increasingly Important for Male Fertility: Evidence from Norway“[P]ersonality relates to men’s and women’s fertility differently; conscientiousness decreases female fertility, openness decreases male fertility and extraversion raises the fertility of both sexes. Neuroticism depresses fertility for men, but only for those born after 1956.”

Host genetic variation impacts microbiome composition across human body sites“Our results highlight the role of host genetic variation in shaping the composition of the human microbiome, and provide a starting point toward understanding the complex interaction between human genetics and the microbiome in the context of human evolution and disease.”

DNA At the Fringes: Twins, Chimerism, and Synthetic DNA – h/t genetics and society! who tweeted: “Chimeras could undermine DNA forensics & use of DNAtesting as conclusive proof of crime & family.”

Ethnic differences in the association between depression and chronic pain: cross sectional results from UK Biobank [pdf] – h/t don lyall!

Emotion, rationality, and decision-making: how to link affective and social neuroscience with social theory

Women and men react differently to infidelity“While men are most jealous of sexual infidelity, women are most jealous of emotional infidelity.” – w.e.i.r.d. study. (n=1000).

‘Safe spaces’ exist because universities treat secular ideas as sacred“The most influential effect of this cultural and political imbalance is that academia has ignored the increasing evidence that human traits are heavily influenced by hereditary factors, most prominently in intelligence and sexual differences. This has a huge bearing on public policy, especially when so much of policy is involved in tackling inequality of various kinds. It would be like trying to reduce economic inequality while pretending that wealth cannot be inherited, because that’s offensive to people’s parents, and that all fortunes were the results of education, hard work or sheer luck.” – from ed west.

Relics of the Blank Slate, as Excavated at “Ethics” Magazine“There’s a reason that the Blank Slaters clung so bitterly to their absurd orthodoxy for so many years. If there is such a thing as human nature, then all the grandiose utopias they concocted for us over the years, from Communism on down, would vanish like so many mirages.” – from helian.

Anthropologist: “I’ve Never Been So Disgusted with My Own Data” – from steve sailer.

“Ethics” is advertising – david chapman on virtue signaling (trans: signalling. (~_^) ).

Two Fed economists tried to replicate some top economic studies — and the results are dreadful – from mike bird.

The shifting tide of American immigration – from colin woodard.

Missing piece of Gilgamesh Epic discovered

Pompeii Victims’ Bodies Revealed in [ct] Scans: Photos

Excavations at Mexican ruin site yields new details of Aztecs’ sacrifice of captured Spaniards“It was one of the worst defeats in one of history’s most dramatic conquests: Only a year after Hernan Cortes landed in Mexico, hundreds of people in a Spanish-led convey were captured, sacrificed and apparently eaten.”

bonus: Most worker ants are slackers“[N]ew research shows that many ants in a colony seem to specialize in doing nothing at all. To get a closer look at how these ants filled their time, researchers marked every member of five lab-based colonies with dots of colored paint. Over the course of 2 weeks, a high-definition camera recorded 5-minute segments of the ants in action six times a day, capturing their behavior (or lack thereof). Out of the ‘workers,’ 71.9% were inactive at least half the time, and 25.1% were never seen working. A small fraction of the ants, just 2.6%, were always active during observation, the researchers wrote last month in Behavioral Ecology and Sociobiology.”

bonus bonus: How to Dupe a Dung Beetle“A case of biological mimicry has been spotted in Ceratocaryum argenteum, a South African plant that tricks dung beetles into spreading its stinky seeds.”

bonus bonus bonus: Elephants: Large, Long-Living and Less Prone to Cancer“Dr. Schiffman and his colleagues found that elephants have evolved new copies of the p53 gene [“a gene that is crucial for preventing cancer”]. While humans have only one pair of p53 genes, the scientists identified 20 pairs in elephants.”

bonus bonus bonus bonus: DNA Sequenced for New Zealand’s First Dog – the kurī. woof!

bonus bonus bonus bonus bonus: Watch Drones Drop Thousands of Moths on Crops

bonus bonus bonus bonus bonus bonus: Honour, community and hierarchy in the feasts of the archery and crossbow guilds of Bruges, 1445–81

and the tweet of the week… (~_^)

(note: comments do not require an email. “Humans come then go, that is the way fate decreed on the Tablets of Destiny.”)

linkfest – 05/11/15

Deep-ocean microbe is closest living relative of complex cells“A new study indicates that plants, fungi, and animals are descendants of archaea, the group of single-celled organisms that includes Sulfolobus, a resident of hot springs.” – h/t bill barendse! – see also: New Loki Microbe Is Closest Relative To All Complex Life.

A Surprise for Evolution in Giant Tree of Life“Researchers build the world’s largest evolutionary tree and conclude that species arise because of chance mutations — not natural selection…. This controversial proposal stems from efforts by Hedges and collaborators to build the world’s most comprehensive tree of life — a chart plotting the connections among 50,000 species of Earth’s vast menagerie. Their analysis suggests that speciation is essentially random. No matter what the life form — plant or animal, insect or mammal — it takes about 2 million years for a new species to form. Random genetic events, not natural selection, play the main role in speciation.” – see also Was Charles Darwin Wrong About Speciation? from razib.

Genetic changes to basic developmental processes evolve more frequently than thought“Newly evolved genes can rapidly assume control over fundamental functions during early embryonic development. The findings suggest that evolutionary changes to the genetics of fundamental biological processes occur more frequently than previously thought.” – h/t david bachinsky!

The First GMO Is 8,000 Years Old“Scientists find that bacteria modified DNA in sweet potatoes millennia ago.”

Behavioral idiosyncrasy reveals genetic control of phenotypic variability [pdf] – “If we could rear genetically identical individuals from a variety of genetic backgrounds and rear them in the same environment, how much phenotypic variation between individuals of the same genotype would we see? Would different genetic backgrounds differ in their degree of variability? What would account for these differences? We used Drosophila inbred lines to address these questions focusing on variability in locomotor handedness. We show that different genotypes vary dramatically in their propensity for variability, that phenotypic variability itself, as a trait, can be heritable, and that loci affecting variability can be mapped. The genetic control of variability has received little attention in quantitative genetics despite the important role variability plays in explaining phenotypic variation between individuals.”

two tweets from the Biology of Genomes meeting re. a presentation on mutation rates:

Team Characterizing DNA from Ancient Human with Recent Neanderthal Ancestry [registration req.] – see also Ancient DNA from an Upper Paleolithic European with recent Neanderthal ancestry“the male sample, Oase 1, is 37-42K years old and comes from the Pestera cu Oase site in southwestern Romania. it’s estimated to harbor 5-11% of genome-wide Neanderthal ancestry, with as much as 50% on chromosome 12. the admixture is in relatively long stretches, which suggests that the mixture took place four to six generations before Oase 1 was alive. – @the eurogenes blog.

The archaeology, chronology and stratigraphy of Madjedbebe (Malakunanja II): A site in northern Australia with early occupation“The stone artefacts and stratigraphic details support previous claims for human occupation 50–60 ka and show that human occupation during this time differed from later periods.” – h/t chris stringer!

Stone bracelet is oldest ever found in the world“Dating back 40,000 years to the Denisovan species of early humans, new pictures show beauty and craftsmanship of prehistoric jewellery.” – denisovan jewelry!!

The Old Race – from greg cochran.

Ancient DNA Tells a New Human Story“The study of ancient DNA has challenged this view. We now know that mass migrations occurred repeatedly, overwhelming natives while absorbing some of their genes…. Joseph Pickrell of Columbia University and David Reich of Harvard University argue that ‘major upheavals’ of human population have been ‘overwriting’ the genetic history of the past 50,000 years. The result, they say, is that ‘present-day inhabitants of many places in the world are rarely related in a simple manner to the more ancient peoples of the same region.'” – from matt ridley.

2,500-year old Etruscans“All that can be said based on this is that they seem broadly southern European and not particularly Tuscan.” – from dienekes. – h/t anthropology tip!

The time and place of European gene flow into Ashkenazi Jews – @the eurogenes blog.

Symbolic bones and interethnic violence in a frontier zone, northwest Mexico, ca. 500–900 C.E.“Persistent interethnic violence has affected some global regions for centuries…. In the prehispanic Northern Frontier of Mesoamerica, approximately 500–900 C.E., people of different ethnic backgrounds struggled for standing in a shifting sociopolitical landscape. Evidence is consistent with long-term social violence….” – h/t gaetan burgio!

London Conference on Intelligence 2015 Keynote – from dr. james thompson.

NIH bans funding for genetic engineering of human embryos – (>.<)

Three hundred years of low non-paternity in a human population“Here we use this approach to investigate 1273 conceptions over a period of 330 years in 23 families of the Afrikaner population in South Africa. We use haplotype frequency and diversity and coalescent simulations to show that the male population did not undergo a severe bottleneck and that paternity exclusion rates are high for this population. The rate of cuckoldry in this Western population was 0.9% (95% confidence interval 0.4–1.5%), and we argue that given the current data on historical populations we have to conclude that, at least for Western human populations, cuckoldry rate is probably in the range of 1%.” – h/t debbie kennett!

Genius and autism may share genetic link, study finds“Child prodigies and their autistic family members may share a genetic link, according to findings published online for the April issue of Human Heredity.”

Immediate susceptibility to visual illusions after sight onset – h/t laura kelley!

The glass is half full *and* half empty: A population-representative twin study testing if optimism and pessimism are distinct systems“Here, we addressed these questions in a genetically informative sample of 852 pairs of twins. Distinct genetic influences on optimism and pessimism were found. Significant family-level environment effects also emerged, accounting for much of the negative relationship between optimism and pessimism, as well as a link to neuroticism. A general positive genetics factor exerted significant links among both personality and life-orientation traits. Both optimism bias and pessimism also showed genetic variance distinct from all effects of personality and from each other.” – h/t stuart ritchie!

Stanford researchers observe the moment when a mind is changed

Nature or nurture? Are sporting champions born to win? – h/t razib!

Menstrual Cycle Phase Does Not Predict Political Conservatism

Heritability of decisions and outcomes of public goods games

The kind of student you were in elementary school predicts mortality – h/t timothy bates!

The Mask of Sanity Revisited: Psychopathic Traits and Affective Mimicry – h/t claire lehmann! who tweeted: “People with psychopathy can produce highly convincing but fake expressions of feelings.”

Polygyny without wealth: popularity in gift games predicts polygyny in BaYaka Pygmies – h/t steve stewart williams!

The kin selection argument continues, with those denying its importance holding firm. They’re wrong. – from jerry coyne.

Behaviorism and the revival of antiracism – from peter frost.

Heterogeneity of long-history migration explains cultural differences in reports of emotional expressivity and the functions of smiles – hmmmm. really? – see also: What your smile says about where you’re from“If you come from a country of immigrants, you’re more likely to crack a friendly smile on the street. That’s the conclusion of a new study, which may explain why Americans beam more than their Chinese and Russian counterparts.”

Is reading to your kids “unfairly disadvantaging” others? – hahahahahaha! – h/t brian boutwell! who tweeted: “The nonsense that you can believe when you’re convinced that genes don’t matter.” – see also Is having a loving family an unfair advantage?

How uncommon is tickertaping? Prevalence and characteristics of seeing the words you hear – h/t kevin mitchell!

Peter Visscher: Genomics, Big Data, Medicine, and Complex Traits – @steve hsu’s.

Memes are Genes – from evolution theorist. (where do memes come from?) – h/t jayman!

How can our future Mars colonies be free of sexism and racism? – (>.<) #virtuesignalling – h/t ed west!

Paternity Case for a New Jersey Mother of Twins Bears Unexpected Results: Two Fathers – ruh roh!

After Nearly Claiming His Life, Ebola Lurked in a Doctor’s Eye“Before he contracted Ebola, Dr. Ian Crozier had two blue eyes. After he was told he was cured of the disease, his left eye turned green [temporarily].” – whoa.

How music evolves“Statistical analysis of music reveals the truth about its periods of revolution.” – h/t argumatronic!

The Medieval Roots of Our DIY Gun Culture“Forget 3-D printers. The first garage gunsmiths date back to the late Middle Ages.”

When Baltimore Shook With Anger, Here’s What China Saw“Online reaction revealed much about Chinese tension with an influx of African immigrants.” – h/t holtz!

No, there’s no “hate speech” exception to the First Amendment – duh. – from eugene volokh.

bonus: The migration of the eagle hunters – awesome!

(note: comments do not require an email. kazakh eagle hunter!)