Hunter-Gatherers Use Division of Labor

(p. D4) The division of labor in hunter-gatherer communities is complex and sophisticated, and crucial to their economic success, researchers report.
A paper in the journal Philosophical Transactions B looks at two hunter-gatherer groups: the Tsimane game hunters of lowland Bolivia, and the Jenu Kuruba honey collectors of South India.
“In contrast to the simple cave man view of a hunter-gatherer, we found that it requires a tremendous amount of skill, knowledge and training,” said Paul Hooper, an anthropologist at Emory University and one of the study’s authors.
. . .
When Jenu Kuruba men go in search of honey, Dr. Hooper said, “there’s one man who specializes in making smoke to subdue the bees, another that climbs the trees, and others that act as support staff to lower combs.”

For the full story, see:
SINDYA N. BHANOO. “Observatory; Nothing Simple About Hunter-Gatherer Societies.” The New York Times (Tues., OCT. 27, 2015): D4.
(Note: ellipsis added.)
(Note: the online version of the story has the date OCT. 26, 2015.)

The academic article mentioned in the passage quoted above, is:
Hooper, Paul L., Kathryn Demps, Michael Gurven, Drew Gerkey, and Hillard S. Kaplan. “Skills, Division of Labour and Economies of Scale among Amazonian Hunters and South Indian Honey Collectors.” Philosophical Transactions of the Royal Society of London B: Biological Sciences 370, no. 1683 (Oct. 2015), DOI: 10.1098/rstb.2015.0008.

Humans Suffered from Plague by at Least 5,000 Years Ago

(p. D4) Historians and microbiologists alike have searched for decades for the origins of plague. Until now, the first clear evidence of Yersinia pestis infection was the Plague of Justinian in the 6th century, which severely weakened the Byzantine Empire.
But in a new study, published on Thursday [Oct. 22, 2015] in the journal Cell, researchers report that the bacterium was infecting people as long as 5,000 years ago.

For the full story, see:
“Archaeology: Plagues Said to Have Hit During Bronze Age.” The New York Times (Tues., OCT. 27, 2015): D4.
(Note: bracketed date added.)
(Note: the much shorter online version of the story has the date OCT. 22 (sic), 2015, and has the title “In Ancient DNA, Evidence of Plague Much Earlier Than Previously Known.” The passage quoted above is from the online version.)

The academic article mentioned in the passages quoted above, is:
Rasmussen, Simon, Morten Erik Allentoft, Kasper Nielsen, Ludovic Orlando, Martin Sikora, Karl-Göran Sjögren, Anders Gorm Pedersen, Mikkel Schubert, Alex Van Dam, Christian Moliin Outzen Kapel, Henrik Bjørn Nielsen, Søren Brunak, Pavel Avetisyan, Andrey Epimakhov, Mikhail Viktorovich Khalyapin, Artak Gnuni, Aivar Kriiska, Irena Lasak, Mait Metspalu, Vyacheslav Moiseyev, Andrei Gromov, Dalia Pokutta, Lehti Saag, Liivi Varul, Levon Yepiskoposyan, Thomas Sicheritz-Pontén, Robert A Foley, Marta Mirazón Lahr, Rasmus Nielsen, Kristian Kristiansen, and Eske Willerslev. “Early Divergent Strains of Yersinia Pestis in Eurasia 5,000 Years Ago.” Cell 163, no. 3 (Oct. 2015): 571-82.

Newly Found, Early Human Species, Respected Their Dead

(p. A1) [A] . . . new hominin species was announced on Thursday, [September 10, 2015] by an international team of more than 60 scientists led by Lee R. Berger, an American paleoanthropologist who is a professor of human evolution studies at the University of the Witwatersrand in Johannesburg. The species name, H. naledi, refers to the cave where the bones lay undisturbed for so long; “naledi” means “star” in the local Sesotho language.
In two papers published this week in the open-access journal eLife, the researchers said that the more than 1,550 fossil elements documenting the discovery constituted the largest sample for any hominin species in a single African site, and one of the largest anywhere in the world.
. . .
The finding, like so many others in science, was the result of pure luck followed by considerable effort.
Two local cavers, Rick Hunter and Steven Tucker, found the narrow entrance to the chamber, measuring no more than seven and a half inches wide. They were skinny enough to squeeze through, and in the light of their headlamps they saw the bones all around them. When they showed the fossil pictures to Pedro Boshoff, a caver who is also a geologist, he alerted Dr. Berger, who organized an investigation.
. . .
(p. A3) Besides introducing a new member of the prehuman family, the discovery suggests that some early hominins intentionally deposited bodies of their dead in a remote and largely inaccessible cave chamber, a behavior previously considered limited to modern humans. Some of the scientists referred to the practice as a ritualized treatment of their dead, but by “ritual” they said they meant a deliberate and repeated practice, not necessarily a kind of religious rite.
. . .
At the news conference in South Africa on Thursday, [September 10, 2015] announcing the findings, Dr. Berger said: “I do believe that the field of paleoanthropology had convinced itself, as much as 15 years ago, that we had found everything, that we were not going to make major discoveries and had this story of our origins figured out. I think many people quit exploring, thought it was safer to conduct science inside a lab or behind a computer.” What the new species Naledi says, Dr. Berger concluded, “is that there is no substitute for exploration.”

For the full story, see:
JOHN NOBLE WILFORD. “Cave Yields Addition to Human Family Tree.”The New York Times (Fri., SEPT. 11, 2015): A1 & A3.
(Note: ellipses, and bracketed word and date, added.)
(Note: the online version of the story has the date SEPT. 10, 2015, and has the title “Homo Naledi, New Species in Human Lineage, Is Found in South African Cave,”)

Fire Cooked Carbohydrates Fed Bigger Brains

(p. D5) Scientists have long recognized that the diets of our ancestors went through a profound shift with the addition of meat. But in the September issue of The Quarterly Review of Biology, researchers argue that another item added to the menu was just as important: carbohydrates, bane of today’s paleo diet enthusiasts. In fact, the scientists propose, by incorporating cooked starches into their diet, our ancestors were able to fuel the evolution of our oversize brains.
. . .
Cooked meat provided increased protein, fat and energy, helping hominins grow and thrive. But Mark G. Thomas, an evolutionary geneticist at University College London, and his colleagues argue that there was another important food sizzling on the ancient hearth: tubers and other starchy plants.
Our bodies convert starch into glucose, the body’s fuel. The process begins as soon as we start chewing: Saliva contains an enzyme called amylase, which begins to break down starchy foods.
Amylase doesn’t work all that well on raw starches, however; it is much more effective on cooked foods. Cooking makes the average potato about 20 times as digestible, Dr. Thomas said: “It’s really profound.”
. . .
Dr. Thomas and his colleagues propose that the invention of fire, not farming, gave rise to the need for more amylase. Once early humans started cooking starchy foods, they needed more amylase to unlock the precious supply of glucose.
Mutations that gave people extra amylase helped them survive, and those mutations spread because of natural selection. That glucose, Dr. Thomas and his colleagues argue, provided the fuel for bigger brains.

For the full story, see:
Carl Zimmer. “MATTER; For Evolving Brains, a ‘Paleo’ Diet of Carbs.” The New York Times (Tues., AUG. 18, 2015): D5.
(Note: ellipses added.)
(Note: the online version of the story has the date AUG. 13, 2015.)

The academic article summarized in the passages above, is:
Hardy, Karen, Jennie Brand-Miller, Katherine D. Brown, Mark G. Thomas, and Les Copeland. “The Importance of Dietary Carbohydrate in Human Evolution.” The Quarterly Review of Biology 90, no. 3 (Sept. 2015): 251-68.

Most Early Christians Blended in as Ordinary Romans

(p. C9)The earliest Christian building excavated anywhere in the Roman Empire, the famous house-church of Dura-Europos (now under the enlightened protection of Islamic State), dates to the mid-third century. Literary sources, both Christian and non-Christian, make it abundantly clear that Christian communities grew up everywhere in the Mediterranean in the 150 years after Jesus’ death: Think of the famous congregations of Corinth, Colossae and Ephesus, vividly evoked in Paul’s letters. But to the archaeologist these communities are completely invisible. Where are they?
In his lively new book, “Coming Out Christian in the Roman World,” Douglas Boin offers an answer. Early Christian writers like St. John of Patmos or Tertullian of Carthage rejected any hint of compromise with the Roman imperial state or with their non-Christian neighbors: “No man,” warned Tertullian grimly, “can serve two masters.” But there is no particular reason to think that Tertullian’s views were widely accepted at the time. Fundamentalist zealots often have the loudest voices. In fact, it seems, most early Christians were quite happy to rub along quietly with the Roman world as they found it. They served in the Roman army, honored the emperor and even participated in pagan sacrificial ritual. Their archaeological invisibility is easy to explain: Aside from their personal convictions (revealed every now and then in their choice of graffiti), most early Christians were just ordinary Romans.

For the full review, see:
EVAN HEPLER-SMITH. “Rome at the Crossroads; Apart from their convictions, most early Christians were just ordinary Romans. They served in the army, honored the emperor and even participated in pagan sacrificial ritual.” The Wall Street Journal (Sat., March 21, 2015): C9.
(Note: the online version of the review has the date March 20, 2015.)

The book under review, is:
Boin, Douglas Ryan. Coming out Christian in the Roman World: How the Followers of Jesus Made a Place in Caesar’s Empire. New York: Bloomsbury Press, 2015.

Homo Sapiens Made Eye Contact with Dogs to Dominate Neanderthals

(p. C6) In the space of just a few thousand years, as we spread through the region, we killed off the apex predators: first the Neanderthals and then, over time, cave bears, cave hyenas, lesser scimitar cats, dholes, mammoths and woolly rhinos, among other animals. How did we manage this? According to Ms. Shipman, we enlisted the help of dogs.
. . .
Ms. Shipman devotes the final third of her book to exploring a fascinating range of evidence–genetic, archaeological, anthropological–that provides substantial support for this theory. She never proposes that the alliance of humans and dogs alone led to the extinction of the Neanderthals. In all likelihood, she writes, the mere presence of humans, a competitive new predator in the Eurasian ecosystem, was an important stressor, as were climate change and perhaps even infectious diseases brought by humans from Africa. But the domestication of dogs, she suggests, significantly tipped the balance: “The unprecedented alliance of humans with another top predator (wolf-dogs or a kind of wolf) may have been the final stress that pushed Neanderthals and many other species down the slippery slope toward extinction.”
So how did humans manage to domesticate wolves while their Neanderthal cousins, so similar in so many ways, did not? Here Ms. Shipman gets imaginative. Modern humans, she writes, have recently been shown to be the only extant primates whose irises are surrounded by white scleras–the whites of our eyes. We’re also the only primate to have eyelids that expose much of our scleras. What evolutionary advantage could this have possibly given us? “The white scleras and open eyelids,” she proposes, “make the direction of a person’s gaze highly visible from a distance.” Having white scleras allowed us to communicate subtly at a distance among ourselves and with our new best friend, dogs, a biological advantage that may have made all the difference as we competed for prey with Neanderthals–who, if they were like every other primate we know of today, had dark scleras.
Most animals, including apes and wolves, don’t make eye contact with humans; nor do they gaze at faces for long. Dogs, on the contrary, are excellent gaze-followers, a trait that scientists believe we selectively bred into them during their domestication. Once we had teamed up with dogs, we were unstoppable.

For the full review, see:
TOBY LESTER. “The Slippery Slope to Extinction.” The Wall Street Journal (Sat., March 21, 2015): C5-C6.
(Note: ellipsis added.)
(Note: the online version of the review has the date March 20, 2015.)

The book under review, is:
Shipman, Pat. The Invaders: How Humans and Their Dogs Drove Neanderthals to Extinction. Cambridge, MA: Belknap Press, 2015.

Dogs Split from Wolves at Least 27,000 Years Ago

The evidence quoted below might increase the plausibility of the theory that dogs helped give Homo sapiens a survival advantage over Neanderthals.

(p. A8) The ancestors of modern wolves and dogs split into different evolutionary lineages 27,000 to 40,000 years ago, much earlier than some other research has suggested, scientists reported Thursday.

The new finding is based on a bone fragment found on the Taimyr Peninsula in Siberia several years ago. When scientists studied the bone and reconstructed its genome — the first time that had been done for an ancient wolf, or any kind of ancient carnivore — they found it was a new species that lived 35,000 years ago.
Based on the differences between the genome of the new species, called the Taimyr wolf, and the genomes of modern wolves and dogs, the researchers built a family tree that shows wolves and dogs splitting much earlier than the 11,000 to 16,000 years ago that a study in 2014 concluded.

For the full story, see:
JAMES GORMAN. “Dogs Split From Wolves Much Earlier Than Thought.” The New York Times (Fri., MAY 22, 2015): A8.
(Note: ellipses added.)
(Note: the date of the online version of the story is MAY 21, 2015, and has the title “Family Tree of Dogs and Wolves Is Found to Split Earlier Than Thought.”)
(Note: the online version says that the page on the New York edition was A10; my edition is the one that is sent to Omaha.)

Homo Sapiens Arrived in Europe at Least 41,000 Years Ago

(p. D6) . . . , research reported last week in the journal Science adds heft to recent findings that the first modern human migrants arrived earlier than previously thought, perhaps at least 43,000 to 45,000 years ago.
Two teeth found in separate archaeological sites in Italy appeared to tell the tale of the early effect of Homo sapiens in southern Europe. The teeth were those of modern humans who lived 41,000 years ago, scientists concluded. This seemed to settle a longstanding debate over whether the sharp stone blades and ornaments uncovered at the sites belonged to modern humans or Neanderthals.

For the full story, see:
JOHN NOBLE WILFORD. “Teeth Tell of Earlier Trek to Europe by Humans.” The New York Times (Tues., April 28, 2015): D6.
(Note: ellipsis in original.)
(Note: the online version of the story has the date APRIL 27, 2015, and has the title “Teeth Tell of Earlier Trek to Europe by Humans.”)

The academic article summarized above, is:
Benazzi, S., V. Slon, S. Talamo, F. Negrino, M. Peresani, S. E. Bailey, S. Sawyer, D. Panetta, G. Vicino, E. Starnini, M. A. Mannino, P. A. Salvadori, M. Meyer, S. Pääbo, and J. J. Hublin. “The Makers of the Protoaurignacian and Implications for Neandertal Extinction.” Science 348, no. 6236 (May 15, 2015): 793-96.

Hominins Used Stone Tools at Least 3.3 Million Years Ago

(p. A4) One morning in July 2011, while exploring arid badlands near the western shore of Lake Turkana in Kenya, a team of archaeologists took a wrong turn and made a big discovery about early human technology: Our hominin ancestors were making stone tools 3.3 million years ago, some 700,000 years earlier than previously thought.
The findings promise to extend knowledge of the first toolmakers even deeper in time, probably before the emergence of the genus Homo, once considered the first to gain an evolutionary edge through stone technology.
. . .
The stones showed that at least some ancient hominins — the group that includes humans and their extinct ancestors — had started intentionally knapping stones, breaking off pieces with quick, hard strikes from another stone to make sharp tools sooner than other findings suggested.
After further field research and laboratory analysis, the findings at the site known as Lomekwi 3 were described Wednesday in the journal Nature.
. . .
In a commentary in the journal, Erella Hovers, an archaeologist at the Hebrew University of Jerusalem, wrote that some form of toolmaking may have extended back to the last common ancestor of chimpanzees and hominins, as much as seven million years ago.
Dr. Hovers and other scientists not involved in the new research said that the dating of the material appeared solid and that the objects were deliberately produced tools, not scraps of rock broken by accident or natural causes.
“Because the sediments in these layers are fine-grained, and a flake found by the authors could be fitted back onto the core from which it had been detached,” Dr. Hovers said, “it is unlikely that the tools accumulated through stream activity or that substantial disturbance of the sediments occurred after the tools had been discarded.”

For the full story, see:
JOHN NOBLE WILFORD. “Stone Tools From Kenya Are Oldest Yet Discovered.” The New York Times (Thurs., May 21, 2015): A4.
(Note: ellipses added.)
(Note: the date of the online version of the story is MAY 20, 2015.)

The academic article summarized above, is:
Harmand, Sonia, Jason E. Lewis, Craig S. Feibel, Christopher J. Lepre, Sandrine Prat, Arnaud Lenoble, Xavier Boës, Rhonda L. Quinn, Michel Brenet, Adrian Arroyo, Nicholas Taylor, Sophie Clément, Guillaume Daver, Jean-Philip Brugal, Louise Leakey, Richard A. Mortlock, James D. Wright, Sammy Lokorodi, Christopher Kirwa, and Dennis V. Kent. “3.3-Million-Year-Old Stone Tools from Lomekwi 3, West Turkana, Kenya.” Nature 521, no. 7552 (May 21, 2015): 310-15.

Resilient Italian Entrepreneur Planned to Build Trattoria and Ended Up Building Museum

FaggianoAndSonsDigToFixPipe2015-04-19.jpg “Luciano Faggiano and his sons were digging to fix a pipe in Lecce, Italy. They found a buried world tracing back before Jesus.” Source of caption and photo: online version of the NYT article quoted and cited below.

(p. A1) LECCE, Italy — All Luciano Faggiano wanted when he purchased the seemingly unremarkable building at 56 Via Ascanio Grandi was to open a trattoria. The only problem was the toilet.

Sewage kept backing up. So Mr. Faggiano enlisted his two older sons to help him dig a trench and investigate. He predicted the job would take about a week.
If only.
“We found underground corridors and other rooms, so we kept digging,” said Mr. Faggiano, 60.
His search for a sewage pipe, which began in 2000, became one family’s tale of obsession and discovery. He found a subterranean world tracing back before the birth of Jesus: a Messapian tomb, a Roman granary, a Franciscan chapel and even etchings from the Knights Templar. His tratto-(p. A8)ria instead became a museum, where relics still turn up today.
. . .
If this history only later became clear, what was immediately obvious was that finding the pipe would be a much bigger project than Mr. Faggiano had anticipated. He did not initially tell his wife about the extent of the work, possibly because he was tying a rope around the chest of his youngest son, Davide, then 12, and lowering him to dig in small, darkened openings.
. . .
Mr. Faggiano still dreamed of a trattoria, even if the project had become his white whale. He supported his family with rent from an upstairs floor in the building and income on other properties.
“I was still digging to find my pipe,” he said. “Every day we would find new artifacts.”
. . .
Today, the building is Museum Faggiano, an independent archaeological museum authorized by the Lecce government. Spiral metal stairwells allow visitors to descend through the underground chambers, while sections of glass flooring underscore the building’s historical layers.
His docent, Rosa Anna Romano, is the widow of an amateur speleologist who helped discover the Grotto of Cervi, a cave on the coastline near Lecce that is decorated in Neolithic pictographs. While taking an outdoor bathroom break, the husband had noticed holes in the ground that led to the underground grotto.
“We were brought together by sewage systems,” Mr. Faggiano joked.
. . .
“I still want it,” he said of the trattoria. “I’m very stubborn.”

For the full story, see:
JIM YARDLEY. “Home Repair Opens a Portal to Italy’s Past.” The New York Times (Fri., APRIL 15, 2015): A1 & A8.
(Note: ellipses added.)
(Note: the online version of the story has the date APRIL 14, 2015, and has the title “Centuries of Italian History Are Unearthed in Quest to Fix Toilet.”)