Vikings were in North America in 1021, researchers say

Vikings from Greenland — the first Europeans to arrive in the Americas — lived in a village in Canada’s Newfoundland exactly 1,000 years ago, according to research published Wednesday.

Scientists have known for many years that Vikings — a name given to the Norse by the English they raided — built a village at L’Anse aux Meadows in Newfoundland around the turn of the millennium. But a study published in Nature is the first to pinpoint the date of the Norse occupation.

The explorers — up to 100 people, both women and men — felled trees to build the village and to repair their ships, and the new study fixes a date they were thereby showing they cut down at least three trees in the year 1021 — at least 470 years before Christopher Columbus reached the Bahamas in 1492.

“This is the first time the date has been scientifically established,” said archaeologist Margot Kuitems, a researcher at the University of Groningen in the Netherlands and the study’s lead author.

“Previously the date was based only on sagas — oral histories that were only written down in the 13th century, at least 200 years after the events they described took place,” she said.

The first Norse settlers in Greenland were from Iceland and Scandinavia, and the arrival of the explorers in Newfoundland marks the first time that humanity circled the entire globe.

But their stay didn’t last long. The research suggests the Norse lived at L’Anse aux Meadows for three to 13 years before they abandoned the village and returned to Greenland.

The archaeological remains are now protected as a historic landmark and Parks Canada has built an interpretive centre nearby. It’s listed as a World Heritage Site by UNESCO.

The scientific key to the exact date that the Norse were there is a spike in a naturally radioactive form of carbon detected in ancient pieces of wood from the site: some cast-off sticks, part of a tree trunk and what looks to be a piece of a plank. Indigenous people occupied L’Anse aux Meadows both before and after the Norse, so the researchers made sure each piece had distinctive marks showing it was cut with metal tools — something the indigenous people did not have.

Archaeologists have long relied on radiocarbon dating to find an approximate date for organic materials such as wood, bones and charcoal, but the latest study uses a technique based on a global “cosmic ray event” — probably caused by massive solar flares — to determine an exact date.

Previous studies have established there was such a cosmic ray event in the year 993 that for a few months caused greater than usual levels of radioactive carbon-14 in the carbon dioxide of the atmosphere.

Trees “breathe” carbon dioxide as they grow, and so the researchers used that radioactive carbon signature to determine which of the annual growth rings seen in cross-sections of the wood was from 993, Kuitems said.

They then used a microscope to count the later growth rings until the bark of the wood, which gave them the exact year the tree had stopped growing — in other words, when it had been felled by the Norse.

To their surprise, each of the three pieces of wood they tested was from a tree cut down in 1021, although they were from three different trees — two firs and probably one juniper.

The researchers can’t tell if the date of 1021 was near the beginning of the end of the Norse occupation, but they expect further research on other wood from the site will expand the range of dates, Kuitems said.

The Norse voyages to Newfoundland are mentioned in two Icelandic sagas, which indicate L’Anse aux Meadows was a temporary home for explorers who arrived in up to six expeditions.

The first was led by Leif Erikson, known as Leif the Lucky — a son of Erik the Red, the founder of the first Norse settlement in Greenland.

L’Anse aux Meadows, too, was expected to be a permanent settlement, but the sagas indicate it was abandoned due to infighting and conflicts with indigenous people, whom the Norse called skræling — a word that probably means “wearers of animal skins.”

The sagas refer to the entire region as Vinland, which means “Wineland” — supposedly because it was warm enough for grapes used for wine to grow.

Since Newfoundland itself was then too cold for grapes, the name suggests the Norse also explored warmer regions further south, and pieces of exotic wood found at the site also indicate that Kuitems said.

The use of an ancient cosmic ray event to exactly date pieces of wood is a relatively new development, and similar techniques are being used to establish firm dates at other sites, said Sturt Manning, a professor of archaeology at Cornell University, who was not involved in the new study.

“It’s a clever application,” he said. “This is the first clear evidence of Europeans arriving in North America.”

Newly identified American sabre-toothed cat species was larger than a tiger and hunted rhinos

Scientists have identified a huge new saber-toothed cat species, Machairodus lahayishupup, that would have prowled the vast areas of North America between 5 and 9 million years ago, using detailed fossil comparison techniques.

One of the biggest cats ever discovered, M. lahayishupup is estimated in this new study to have a body mass of some 274 kilograms (604 pounds) or so, and possibly even bigger. It’s an ancient relative of the well-known Smilodon, the so-called saber-toothed tiger.

A total of seven M. lahayishupup fossil specimens, including upper arms and teeth, were analyzed and compared with other species to identify the new felid, with the fossils collected from museum collections in Oregon, Idaho, Texas, and California.

“One of the big stories of all of this is that we ended up uncovering specimen after specimen of this giant cat in museums in western North America,” says paleobiologist John Orcutt from Gonzaga University. “They were clearly big cats.”

“What we didn’t have then, that we have now, is the test of whether the size and anatomy of those bones tell us anything – and it turns out that yes, they do.”

The age and size of the fossils gave the researchers a good starting point. Then they used digital images and specialized software to find similarities between the relics – and differences from other cat species, which was just as important.

Points of reference on the specimens showed that they were from the same giant cat and that this cat was a species that hadn’t been identified before. Additional evidence came from the teeth, although the researchers admit that the details of how early saber-toothed cats were related to each other is a little “fuzzy”. 

Upper arms are crucial in these cats for killing prey, and the largest upper arm or humerus fossil discovered in the study was about 1.4 times the size of the same bone in a modern-day lion. That gives you an idea of just how hefty and powerful M. lahayishupup would have been.

“We believe these were animals that were routinely taking down bison-sized animals,” says paleontologist Jonathan Calede from Ohio State University. “This was by far the largest cat alive at that time.”

Rhinoceroses would have been abundant at the same and may have been animals that M. lahayishupup preyed on, alongside camels and sloths significantly bigger than the ones we’re used to today.

While the discoveries made of this new species so far don’t include the iconic saber teeth themselves, it’s significant that M. lahayishupup has been identified mostly from humerus bones, showing what’s possible with the latest analysis software added to many hours of careful study.

Peering back so many millions of years into the past isn’t easy, and the researchers say that a more detailed saber-tooth cat family tree is going to be needed to work out exactly where this species fits in. The findings also open up some interesting evolutionary questions about these giant cats.

“It’s been known that there were giant cats in Europe, Asia, and Africa, and now we have our own giant saber-toothed cat in North America during this period as well,” says Calede.

“There’s a very interesting pattern of either repeated independent evolution on every continent of this giant body size in what remains a pretty hyper-specialized way of hunting, or we have this ancestral giant saber-toothed cat that dispersed to all of those continents. It’s an interesting paleontological question.”

Humans May Have Smoked Tobacco 12,300 Years Ago, Scientists Find New Evidence in Utah

Humankind’s addiction to tobacco runs deep: Archaeologists in Utah have discovered what appears to be the earliest known use of wild tobacco, stretching back 12,500 years—some 9,000 years earlier than the previously dated evidence.

A team from the Far Western Anthropological Research Group in Henderson, Nevada, and the Crow Canyon Archaeological Center in Cortez, Colorado, found Nicotiana attenuata, or coyote tobacco, seeds around a manmade hearth or firepit at the Wishbone site in Utah’s Great Salt Lake Desert, not far from Salt Lake City.

The researchers published their findings in the journal Nature Human Behavior.

Wishbone got its name from the large number of waterfowl bones found at the site, where ducks were likely the mainstay of the prehistoric human diet. But tobacco wouldn’t have grown in what was then a marshy area, with its closest natural habitat some eight miles away.

“It was a completely-out-of-nowhere find. It’s very uncommon to find tobacco seeds, even at later sites: they are really small and they are not food, so they don’t occur very often,” Far Western’s Daron Duke, the paper’s lead author, told Haaretz. “Theoretically, it is possible a duck could nibble on a tobacco plant, but that duck would have to avoid hundreds of square kilometres of its typical diet, go up a rocky mountain range, which they don’t do, and eat a fairly uncommon plant.”

Also in the ashes were seeds from other plants that ancient humans are known to have consumed, suggesting that people intentionally brought tobacco seeds to the site—the population at Wishbone appears to have travelled widely each year.

The seeds wouldn’t have burned well, so they were probably not being used to feed the fire. Most likely, the ancients liked to chew tobacco, releasing the addictive nicotine for a dopamine high.

“To see them, fireside, using tobacco—we can pretty readily imagine what they were getting out of it,” Duke told Scientific American. “It’s very human to imbibe.”

Duke has been conducting research at Wishbone, in the Utah Test and Training Range, for 20 years, and found the remnants of the ancient hearth—just a “little black smudge on the open mudflats of the Great Salt Lake Desert,” he told CNN—back in 2015.

The site has also yielded Haskett-style spear tips made from obsidian, a kind of volcanic glass, that would have been used to hunt large game.

Wishbone has a “unique potential to tell us about how people lived,” Duke told Inverse. “It truly is a fascinating place to work, as one of the most barren settings you can find in the United States.”

To figure out what materials had been left behind in the ashes, scientists used a technique called manual flotation, submerging the sediment samples in water and separating organic and non-organic material.

Radiocarbon dating showed the fire burned approximately 12,300 years ago, with four wild tobacco seeds identified amid the charred remains.

Before the team’s discovery, the earliest documented use of tobacco was in smoking pipes used in the Alabama region some 3,300 years ago, which was dated in 2018.

The new evidence suggests that tobacco use was already firmly entrenched in Native American cultures by that point in time.

“People in the past were the ultimate botanists and identified the intoxicant values of tobacco quickly upon arriving in the Americas,” Duke told Live Science.

The long-held Clovis theory suggests people began travelling over the land bridge that connected Siberia and Alaska some 13,500 to 13,000 years ago. But some recent archaeological discoveries—including the continent’s oldest human footprints—suggest that pre-Clovis people had a presence in North America during the Ice Age, perhaps up to 20,000 or 30,000 years ago.

“On a global scale, tobacco is the king of intoxicant plants, and now we can directly trace its cultural roots to the Ice Age,” Duke told Reuters.