Tuesday, October 1, 2019

An Idea about why Agricultural Society Became Dominant 5,000-10,000 Years Ago

From the Associated Press By RANDOLPH E. SCHMID, AP Science Writer Randolph E. Schmid, Ap Science Writer – Monday, March 7, 2011 3:00 pm ET

WASHINGTON – Thousands of years ago, our ancestors gave up foraging for food and took up farming, one of the most important and debated decisions in history.

Was farming more efficient than foraging? Did the easily hunted animals die out? Did the environment change? 
A new study by Samuel Bowles of the Santa Fe Institute in New Mexico argues that early farming was not more productive than foraging, but people took it up for social and demographic reasons.

In Monday's edition of Proceedings of the National Academy of Sciences, Bowles analyzed what it would take to farm under primitive conditions. He concluded farming produced only about three-fifths of the food gained from foraging.

But, Bowles notes, farming became the most common way of living between 10,000 and 5,000 years ago because of its contribution to population growth and military power.

Without the need for constant movement, child-rearing would have been easier and safer, leading to a population increase, Bowles said. And since stored grain might be looted, farmer communities could have banded together for defense and would have eventually pushed out neighboring foragers, he suggests.

Brian Fagan, a professor emeritus of archaeology at the University of California, Santa Barbara, called Bowles' ideas "provocative and fascinating." It had been suspected that the earliest farming was not necessarily more productive, said Fagan, who was not part of the research. "What he does is to draw attention to the social and demographic factors that contributed so importantly to the spread of farming," Fagan said. "This is a useful contribution to a debate about agricultural origins that has been under way for generations."

Samuel Bowles Abstract:

Cultivation of cereals by the first farmers was not more productive than foraging
Did foragers become farmers because cultivation of crops was simply a better way to make a living? If so, what is arguably the greatest ever revolution in human livelihoods is readily explained. To answer the question, I estimate the caloric returns per hour of labor devoted to foraging wild species and cultivating the cereals exploited by the first farmers, using data on foragers and land-abundant hand-tool farmers in the ethnographic and historical record, as well as archaeological evidence. A convincing answer must account not only for the work of foraging and cultivation but also for storage, processing, and other indirect labor, and for the costs associated with the delayed nature of agricultural production and the greater exposure to risk of those whose livelihoods depended on a few cultivars rather than a larger number of wild species. Notwithstanding the considerable uncertainty to which these estimates inevitably are subject, the evidence is inconsistent with the hypothesis that the productivity of the first farmers exceeded that of early Holocene foragers. Social and demographic aspects of farming, rather than its productivity, may have been essential to its emergence and spread. Prominent among these aspects may have been the contribution of farming to population growth and to military prowess, both promoting the spread of farming as a livelihood.

Santa Fe Institute, Santa Fe, NM, 87501; and University of Siena, Siena 53100, Italy
Edited by Henry T. Wright, University of Michigan, Ann Arbor, MI, & approved February 2, 2011 (received for review July 26, 2010)

Full article from The Proceedings of the National Academy of Sciences for the United States of America.

Sunday, September 29, 2019

Idaho researchers look for links between Clovis people & large mammals on the Snake River Plain


About 13,000 years ago on the banks of the Pleistocene American Falls Lake on the Snake River Plain, large “megafauna” mammals now extinct — such as mammoths, mastodons, camels, short-faced bears, dire wolves & saber-toothed tigers — lived alongside the Clovis people.

However, Clovis artifacts have never been recovered side-by-side with fossil remains of these extinct megafauna mammals, even though they’ve been found near each other.

Charles Speer, an Idaho State University anthropology assistant professor, along with colleagues at the Idaho Museum of Natural History, other universities & soon with ISU students, is engaged in research to document the link between the artifacts of the Clovis people & these extinct animals that populated the area during the same time period.
Charles Speer holds part of a mammoth fossil recovered at the 2018 ISU Archaeology Field School site in the Magic Valley near Kimberly. Next summer, Speer & the school will be working closer to home near American Falls Reservoir.

In a recently published paper on Clovis technology from American Falls on the Eastern Snake River Plain in the journal “North American Archaeologist,” Speer & colleagues detailed the potential for making new scientific findings that can shed light on this period of history in eastern Idaho. This potential includes discovering new information on the area’s climate, animals & people; all of which provides the rationale for thoroughly excavating a site in the area.

“We don’t have a connection in the Snake River Plain between Clovis stone tools, some of the earliest in North America, & the megafauna we have at the time,” Speer said. “We haven’t found any kill, butchering, or scavenging sites where we have the stone tools & animals in the same place. At the American Falls (reservoir) site, it is highly likely that we will find this connection. This next summer during the ISU archaeology field school in June, that is exactly what we are going to be looking for.”

The ISU researchers will be excavating a site down 8 to 10 feet below the surface. “The primary reason we are excavating is that the whole area is in danger of eroding away,” Speer said, noting the group has been tasked by the Bureau of Reclamation to recover as much as they can.

Speer explained that the climate on this portion of the Snake River Plain was likely colder & wetter 13,000 years ago. The climate was affected by the large glaciers to the north extending down from Canada only a few hundred kilometers away. Though the climate was cooler, this area was a magnet for the animals mentioned above, as well as familiar species still making the region home like mule deer, antelope, bison & elk.

“People camped out there, made their tools & hunted the animals. We really just want to make that connection showing they were exploiting these extinct animals because that is a big missing piece,” Speer said.

Studying the climate at the time & potential kill sites can help answer a host of questions about this area’s history.  “We are interested in the animals that died off right when this Clovis culture was at its peak,” Speer said. “We ask questions like ‘did these people kill all these animals, was it climate change or was it both?’ In North America alone, 90 genera of animals over 100 pounds died off during the Clovis period at the close of the Pleistocene 11,700 years ago,” Speer said. This included horses, that flourished when re-introduced 500 years ago by Europeans.

The researchers also are interested in how human beings reacted to climate change during this period, which was right at the end of the Pleistocene period, after which the climate warmed & dried considerably.

In addition, the researchers will be looking for evidence of a culture older than the Clovis living in eastern Idaho.  “Clovis for the longest time was thought to be the oldest culture in North America but know we know it is not,” Speer said. “Researchers in western Idaho have been excavating the Cooper’s Ferry site that is associated with a projectile point style called ‘Western Stemmed’ that is both contemporaneous & potentially older than Clovis. Additionally, they have recovered artifacts several thous& years older which we hope to also discover & fill in the missing pieces with here.”

“We are hoping to see an overlap & connection between the two,” Speer continued, “because we are right on this boundary where to the east you have Clovis in abundance & to the west we have Western Stemmed in abundance, but we don’t have any sites where the two are mixed up. We are also hoping to see the site stretch back in time to 17,000 or 18,000 years ago.”

The researchers will turn over any artifacts found at the site to the Idaho Museum of Natural History, which already has more than 10,000 specimens of megafauna that lived in the area & a collection of Clovis artifacts from the American Falls area.

Friday, September 27, 2019

Early peoples in Texas - 15,000 years ago

Continent’s oldest spear points provide new clues about the first Americans

Washington Post By Sarah Kaplan Oct. 24, 2018

For as long as Buttermilk Creek has wound its way through Texas Hill Country, its spring-fed waters have carved through the region’s dark, dense clays, cutting away layers of earth to expose the rock — & the history — below.
A 15,000-year-old stemmed point. (Center for the Study of the First Americans, Texas A&M University) (unknown/Center for the Study of the First Americans, Texas A&M University)

Here, archaeologists have uncovered evidence of a human settlement stretching back as far as 15,500 years: hammer stones & broken knives, fragments of fractured tools. And now, scientists say, the Buttermilk Creek complex has offered up the oldest known spearheads in North America.

The new “projectile points,” reported this week in the journal Science Advances, come in two unusual shapes — a fact that geologist Mike Waters, who oversaw the excavation, found both “bizarre” & “really exciting.” The find adds to the evidence that the first people arrived in the Americas earlier than researchers thought, even as it raises new questions about who those people were & how they made their epic migration into the continent.

“This is a really fascinating paper,” said Jennifer Raff, an anthropological geneticist at the University of Kansas who was not involved in the new study. “It’s filling in some of the gaps in the archaeological record regarding the Clovis complex & the histories of the very first peoples in the Americas.

If the projectile point was the cellphone of the Pleistocene — an omnipresent technology that shaped cultures & defined daily life — the Clovis tools were the iPhone X. These points, named for the city in New Mexico where they were first found, featured a fluted bottom & rounded sides tapering to a sharp point.

The distinctive spearheads are scattered throughout the rock record between 10,000 & 13,500 years ago, from the East Coast to the Rocky Mountains & as far south as Venezuela. The tools are so ubiquitous that for nearly a century, archaeologists thought that the Clovis tradition represented the first people to arrive in the Americas.

But research in recent decades has revealed archaeological sites much older than Clovis, & genetic analyses of modern Native Americans suggest their ancestors crossed a land bridge from Asia to Alaska about 20,000 years ago, then migrated down the Pacific coast between 20,000 & 15,000 years before present.

So who exactly were these early Americans?

The new points uncovered at Buttermilk Creek may offer a clue, said Waters, who directs the Center for the Study of the First Americans at Texas A&M University. Because tools are so essential to the tasks of survival — hunting, cooking, building, killing — they can say a great deal about the people who wielded them.

In more than 10 years of excavations at his site, Waters & his colleagues have found Clovis points in a rock layer dating to about 13,000 years ago. Below that, in older rocks, they uncovered scores of stone point fragments, but no whole spearheads. It was difficult to know if they were looking at older Clovis artifacts, or something entirely different.

Then, in 2015, the archaeologists uncovered two perfectly preserved artifacts: One triangular point, which resembles a predator’s sharp tooth, & one lobe-shaped projectile with a tapered, or “stemmed,” bottom. With these whole points as models, Waters’s team was able to make sense of the 10 additional fragments they collected. They seemed subtly but significantly different from Clovis & other toolmaking traditions — neither a clear ancestor to the later technology, nor an obvious competitor.

“I just thought, ‘Holy cow,’” Waters recalled. “Whenever you see something for the first time that you didn’t expect, it’s always very exciting & exhilarating.”

Radiocarbon dating of the soils where the points were found suggested they were made between 13,500 & 15,500 years ago — offering a significant piece of archaeological evidence for a migration into the Americas that predates Clovis.

But the points also raise new questions, Waters said: Were the Clovis people descendants of these early inhabitants who came up with a new toolmaking technique? Or did they migrate separately into the continent before scattering their tools across the Americas? “We’re just beginning to answer that,” Waters said.

Skye Gilham, a forensic anthropologist who is a member of the Blackfeet tribe in northern Montana, said that recent archaeological & genetic research has been helpful in establishing a scientific link between the first Americans & their descendants living today. Findings like Waters', which provide evidence for her people’s long history in the Americas, have helped ensure the return of native remains to their communities. “We have said that we have always been here, our homeland,” Gilham said. Archaeology & genetics, she said, “reaffirm" that.

As a historian of North America as the Europeans began to colonize the area now the United States, I am intrigued with, almost obsessed with, when humans 1st appeared in the Atlantic coast area later settled by European colonists. How did these early peoples try to gain some control over the weather patterns & geography? Did they create physical spaces to meet their basic needs for shelter, food, family, health, & safety. How did they organize their society & culture? Did they migrate on foot or water to these sites? Did they generate myths & religions? Humans have a long history of constant migration, confrontation, & adaptation for hundreds of thousands of years. And, of course, different populations around the planet adapted to different conditions in different ways.  BWS

Wednesday, September 25, 2019

More Evidence that 1st Americans came from the Pacific Coast

New Evidence Bolsters Theory That 1st Americans Arrived by the Pacific Coast

Gizmodo.com  by George Dvorsky  8/29/19

Archaeological evidence excavated in western Idaho suggests humans were in the region well over 15,000 years ago—prior to the opening of the massive ice sheets that blocked entrance into North America via the Bering land bridge. It’s further evidence that the continent’s first people arrived by traveling along the Pacific coast.

Prior to the Late Upper Paleolithic, humans had established a presence on every habitable continent on the planet—except North and South America. A gigantic and impenetrable obstruction known as the Cordilleran Ice Sheet blocked entry from Siberia into Alaska, preventing human migration into the New World.

But as the last great Ice Age ended, so too did this colossal barrier. Around 14,800 years ago, the Cordilleran Ice Sheet separated from its neighboring Laurentide Ice Sheet, creating an ice-free corridor that extended from Beringia through to what is now the Dakotas. This dramatic change in the environment has led archaeologists to surmise that the earliest migrants to North America arrived by traversing this corridor, in what’s referred to, appropriately enough, as the Ice-Free Corridor Hypothesis.

Trouble is, emerging archaeological and genetic evidence is increasingly pointing to an arrival date in North America prior to 14,800 years ago, leading to the Coastal Migration Hypothesis. Instead of traveling through the interior, this theory proposes a route in which the first settlers of North America traveled south along the Pacific coast, eventually surpassing the southernmost extent of the ice sheets.

New research published today in Science offers some of the earliest archaeological evidence of humans in North America, further bolstering the Coastal Migration Hypothesis. Working at the Cooper’s Ferry site in western Idaho, a team led by Loren Davis, a professor of anthropology at Oregon State University, uncovered stone tools, animal bones, traces of fire pits, and other signs of human occupation dated to between 16,560 and 15,280 years ago—several centuries prior to the appearance of the ice-free corridor.

“This is so cool,” Christiana Scheib, an archaeologist and paleogeneticist from the University of Cambridge, told Gizmodo. “This is a great example of the kind of archaeology we need happening in order to better understand the First Peoples in the Americas,” said Scheib, who wasn’t involved with the new study.

Archaeologist Alia Lesnek from the Department of Geology at the University at Buffalo, also not affiliated with the new study, said the new paper “presents an exciting new dataset that provides convincing evidence of human presence in modern-day Idaho as early as 15,300 years ago,” and that these results “add to a growing body of research suggesting that the First Americans arrived in North America by traveling along the Pacific coast.”

Last year, Lesnek and her colleagues uncovered potential geological evidence of an Alaskan coastal migration route that could have allowed humans to cross over from Eurasia into North America during the Ice Age.

But not everyone is convinced by the new evidence. One archaeologist we spoke to said more work will be required to validate the results presented in the new paper. The study describes findings from one of two excavation sites at Cooper’s Ferry, which has been investigated by archaeologists since the late 1990s.

“The Cooper’s Ferry site is located along the Salmon River, which is a tributary of the larger Columbia River basin,” said Davis in a press release. “Early peoples moving south along the Pacific coast would have encountered the Columbia River as the first place below the glaciers where they could easily walk and paddle in to North America. Essentially, the Columbia River corridor was the first off-ramp of a Pacific coast migration route.” To which he added: “The timing and position of the Cooper’s Ferry site is consistent with and most easily explained as the result of an early Pacific coastal migration.”

Buried within the deepest layers of the site, Loren’s team found hundreds of artifacts, including stone tools, fire-cracked rocks used in hearths, bone fragments from possibly prey, and other evidence of human occupation, such as areas used for processing food. Tooth fragments from an extinct horse were also uncovered, though its connection to the settlement is not entirely clear.

Radiocarbon dating of animal bone fragments and burnt charcoal suggests the site was repeatedly occupied between 16,560 and 15,280 years ago. “Prior to getting these radiocarbon ages, the oldest things we’d found dated mostly in the 13,000-year range, and the earliest evidence of people in the Americas had been dated to just before 14,000 years old in a handful of other sites,” explained Davis. “When I first saw that the lower archaeological layer contained radiocarbon ages older than 14,000 years, I was stunned but skeptical and needed to see those numbers repeated over and over just to be sure they’re right. So we ran more radiocarbon dates, and the lower layer consistently dated between 14,000-16,000 years old.”

The new paper subsequently challenges the longstanding “Clovis First” theory of North American colonization, which proposes that the first migrants to the continent arrived via the interior ice-free route, eventually reaching the Dakotas. What’s more, the authors presented evidence showing that the tools used by the Cooper’s Ferry migrants were of a distinctly non-Clovis-like nature. Specifically, these people employed unfluted and stemmed projectile points, and not the fluted, broad-based points indicative of Clovis culture. Loren and his colleagues also argued that the tools used by the Cooper’s Ferry people bear a striking resemblance to those found in contemporaneous cultures living in northeastern Asia, including Japan. This would seem to suggest that these early migrants retained knowledge of this technology as they settled into North America.

“My perspective is that Cooper’s Ferry is intriguing, but not paradigm-shifting.” Ben Potter, an archaeologist from the University of Alaska Fairbanks, had some issues with the new paper. “My perspective is that Cooper’s Ferry is intriguing, but not paradigm-shifting,” Potter told Gizmodo. “Much more work needs to be done to establish the nature and age of the occupations.”

Potter expressed concerns about the layer itself, which he described as a hodge-podge of “multiple potentially overlapping components over four thousand years.” He also didn’t love the fact that the majority of dates established within the investigated layer were less than 13,800 years old (10 out of the 18 ages reported). There is “no good reason to hypothesize occupation” at more than 16,000 years ago “because of a few widely scattered charcoal fragments not directly linked to cultural feature, and one from a feature with much later ages,” he said. The date presented in the study most closely linked with stemmed points at other sites, around 11,600 years old, or the oldest hearth with a few flakes between 15,000-14,000 years old, he said, do not “preclude passage through the Ice Free Corridor and/or the Pacific coast,” and by “no means do these data refute the [ice-free corridor] hypothesis. Both interior and coastal routes remain viable,” he said.

On a similar note, Lesnek thought it important to point out that the oldest age established for the site, at over 16,500 years old, was not established directly from material that was actually dated. “Rather, that age comes from a statistical modeling program that uses dates from the entire sediment layer to estimate when the event—in this case occupation by humans—began,” Lesnek told Gizmodo. “However, the statistical modeling program the authors employ is robust and widely used in archeology and earth sciences. In addition, even if the authors used the oldest radiocarbon date to determine the age of the site, that would put humans in North America by 15,300 years ago, which precludes that the initial migration to the Americas took place through the ice-free corridor.”

Potter described the comparisons of the stemmed points with Japanese tools as being “superficial and unconvincing,” without “any technological analysis to support the hypothesized connections.” Similarly, Scheib said this connection was “interesting,” but it “doesn’t mean that these people came directly from there,” she told Gizmodo.

Scheib, who studies the DNA of America’s first people, said an early genetic split occurred among North America’s first settlers, and it may have happened around the time of the Cooper’s Ferry settlement. “One group is associated with Clovis tools and related to modern Central and South Americans and the other is related to modern North Americans,” Scheib told Gizmodo. “It would be very interesting to know whether the early people at Cooper’s Ferry are genetically more like one or the other. Or if this is the time when these two groups are actually becoming distinct entities.” Genetic evidence from Cooper’s Ferry—which has yet to be uncovered—could tell us more about how and where these two populations diverged, she said. Finding DNA could be tough but not impossible.

“The cultural material at Cooper’s Ferry was only accessible due to the construction of a road in the 1930s, which removed about 15 feet of sediment,” Lesnek told Gizmodo. “It may very well be that other ancient archeological sites are buried across North America, but we haven’t found them yet.”

As a historian of North America as the Europeans began to colonize the area now the United States, I am intrigued with, almost obsessed with, when humans 1st appeared in the Atlantic coast area later settled by European colonists. How did these early peoples try to gain some control over the weather patterns & geography? Did they create physical spaces to meet their basic needs for shelter, food, family, health, & safety. How did they organize their society & culture? Did they migrate on foot or water to these sites? Did they generate myths & religions? Humans have a long history of constant migration, confrontation, & adaptation for hundreds of thousands of years. And, of course, different populations around the planet adapted to different conditions in different ways.  BWS

Monday, September 23, 2019

Evidence seems to Reveal a 17,000-Year-Old Coastal Route Into North America

A Possible 17,000-Year-Old Coastal Migration Route to North America

Gizmodo.com  George Dvorsky  5/30/18

The first people to cross into North America from Eurasia did so by traveling through the Bering Strait, or so the theory goes. A new theory has emerged proposing a coastal route into the continent, but evidence has been lacking. A recent analysis of boulders, bedrock, and fossils in Alaska is now providing a clearer picture, pointing to the emergence of a coastal route some 17,000 years ago.

New research published today in Science Advances is offering some of the first geological evidence of an Alaskan coastal migration route that would have made it possible for humans to cross over from Eurasia into North America when the Ice Age was still going strong. Importantly, the paper also includes evidence of aquatic and terrestrial life in the region during the same time period, which means venturing humans would have had access to food. The University at Buffalo researchers aren’t saying humans definitely traveled along this coastal route—they’re just saying the conditions were set for human migration into North America starting around 17,000 years ago.

Illustration titled New Evidence Reveals a 17,000-Year-Old Coastal Route Into North America  Image: Bob Wilder/U. at Buffalo

At the height of the last Ice Age, North America was separated from Eurasia by the massive Cordilleran Ice Sheet, preventing the flow of humans into the continent. Eventually, humans were able to make the trek, but scientists aren’t entirely sure which route they took, or the timing of the transcontinental leap.

During the 20th century, it was conventionally assumed that North America’s first peoples travelled through a narrow, ice-free corridor, but recent evidence has thrown a rather large wrench into this long-standing hypothesis. The retreating ice sheets didn’t yield an interior pathway until about 14,000 years ago, and the strip of land that suddenly became accessible wasn’t suitable for animals and humans until about 13,000 to 12,600 years ago. This presents a huge chronological problem, because archaeological evidence places humans in Chile around 15,000 years ago, and in Florida some 14,500 years ago.

Hence the Coastal Migration Theory, also known as the Kelp Highway Hypothesis. Instead of traveling through an interior route, it’s counterargued, human migrants hugged the Siberian, Beringian, and Alaskan coastlines, eventually making their way into North and South America. There’s practically no archaeological evidence to support this theory, but the recent discovery of 29 footprints on the shoreline of Calvert Island in British Columbia, dated at 13,000 years old, teases at the possibility. Complicating matters, scientists aren’t even sure if the glaciers completely blocked the coastal route, or when the ice sheets retreated to make the route available for human migration.

To answer these questions, Lesnek’s team visited four islands within Alaska’s Alexander Archipelago, which is located about 200 miles (360 km) south of Juneau. Looking at the physical evidence, it was clear to the team that ice once dominated the area. “The landscape is glacial,” said Jason Briner, lead author of the study and a geologist at the University at Buffalo, in a statement. “The rock surfaces are smooth and scratched from when the ice moved over it, and there are erratic boulders everywhere. When you are a geologist, it hits you in the face. You know it immediately: The glacier was here.”

Using a technique known as surface exposure dating, the researchers were able to figure out when the ice began to retreat. Chemical signatures within the rocks and bedrock tell scientists when ice no longer provided a barrier to the elements. “This definitively tells us that the glaciers in southeastern Alaska retreated from the coast 17,000 years ago,” Lesnek told Gizmodo. “We also took advantage of a rich archive of fossils found in a cave on Prince of Wales Island. By radiocarbon dating the bones and identifying which animals they came from, we were able to determine that ringed seal and arctic fox were living in southeastern Alaska when the coastal route opened.”

Lesnek and her colleagues were surprised that glaciers blocked the coastal route. Her team went into this project thinking that these areas had been completely ice-free during the last Ice Age. “But our results tell a different story,” she said. “We now know that the glaciers may have blocked the coastal route for a few thousand years. However, these glaciers retreated around 17,000 years ago, which opened the door for human migration along the coast,” said Lesnek. “The timing of glacier retreat lines up very well with the genetic and archaeological evidence for the peopling of the Americas.” Importantly, the new study only covers a very small portion of the coastal route, and other parts still remain undated. Lesnek says her team will continue to hunt for areas that may have escaped glaciation, and map the areas in which life was able to emerge in the immediate aftermath.

Ben Potter, a professor of anthropology at the University of Alaska Fairbanks who wasn’t involved in the new study, likes the new paper, saying the conclusion is plausible and that the researchers were wise to limit themselves to the notion that an early migration route along this part of the coast was possible, rather than saying it was likely or certain. “In archaeological science, we need deliberate, methodical analyses of all aspects of paleoecology, geology, etc., to understand human adaptation and expansion, including migration,” Potter told Gizmodo. “So this is a welcome study in understanding the complex deglaciation process in this part of the northwest coast.” Potter said scientists should continue these types analyses along the coast to learn more about the timing of glacial retreat, and to track changes in the environment and ecology during this critical time period. But he says the ultimate answer to the timing and nature of North American colonization will likely remain elusive for some time to come.

“The migration of one or more Native American populations into the Americas was likely a complex process, including between one and three major groups: the Ancient Beringians, North Native Americans, and South Native Americans,” said Potter. “The timing remains unknown, but likely post-dates 16,000 years ago, given the genetic evidence for expansion after this time.” He says the routes taken may have included the interior ice-free corridor, the coastal route—or, more likely, both. “Recent research has indicated ice free, proglacial lake free [a lake in front of a melting glacier], and vegetated conditions in the ice-free corridor by 15,000 years ago, and this new paper indicates livable conditions along the coast at 17,000 years ago,” he said. “Studies like this are absolutely necessary to properly situate hypotheses about the peopling of the Americas.”

As a historian of North America as the Europeans began to colonize the area now the United States, I am intrigued with, almost obsessed with, when humans 1st appeared in the Atlantic coast area later settled by European colonists. How did these early peoples try to gain some control over the weather patterns & geography? Did they create physical spaces to meet their basic needs for shelter, food, family, health, & safety. How did they organize their society & culture? Did they migrate on foot or water to these sites? Did they generate myths & religions?  Humans have a long history of constant migration, confrontation, & adaptation for hundreds of thousands of years. And, of course, different populations around the planet adapted to different conditions in different ways.  BWS