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Study: The First Americans Didn't Arrive by the Bering Land Bridge

Stone projectile points discovered at Oregon's Rimrock Draw rockshelter. One may be at least 15,800 years old. Image credit: Katrina Lancaster // Bureau of Land Management // CC BY 2.0

For much of the 20th century, scientists believed that the first settlers of the Americas could only have arrived one way. As the conventional story went, an ice-free super highway opened up across the Bering Land Bridge toward the end of the last ice age, allowing people from Eurasia to follow big game like bison and mammoths down through the interior of North America.

New archaeological discoveries have challenged that narrative in recent years. And a study published in the journal Nature offers further evidence that this northerly corridor wasn’t the first route to the continent.

University of Copenhagen researchers Eske Willerslev, Mikkel Pedersen, and their colleagues found that this harsh route only became viable for human migration 12,600 years ago—when the first plants and animals showed up in the region. Meanwhile, archaeologists have ample evidence that people were living in the Americas long before then.

“We know conclusively that human groups were in the interior before that date—perhaps as early as 15,000 calibrated radiocarbon years before present—so it is highly unlikely that they came south through the corridor,” said Michael O’Brien, an anthropologist and current academic vice president of Texas A&M University–San Antonio, who wasn’t involved in the study. “A more likely scenario is that they came south along the Pacific coast.”

For the study, Pedersen and colleagues drilled sediment cores from beneath the frozen surface of two lakes in western Canada: Charlie Lake and Spring Lake. These were among the last areas to lose their ice cover when the two huge ice sheets that blanketed the region (the Laurentide and Cordilleran ice sheets) split during the end of the last glacial maximum, around 15,000 years ago. The retreating ice opened up a path some 1500 kilometers long into the interior of North America.

With the sediment cores, the scientists were able to reconstruct a history of environmental conditions along this route based on algae, pollen and other plant matter, fossils, and ancient DNA trapped in the layers of chilly soil. They concluded that before 12,700 years ago, patchy grass was the only life along the ice-free route. Slowly, plants like sage brush and willow started to change the barren corridor into a steppe landscape. By 12,600 years ago, bison arrived. About 2000 years later, the route started to look more lively as it became populated by jackrabbits, voles, and other small mammals, which were followed by mammoths, elk, and predators like bald eagles. The route likely became impassable for humans and big mammals again about 10,000 years ago, when dense coniferous forests started to grow.

The results of the study suggest the route was only usable between 12,600 and 10,000 years ago. This narrow window is too late to match with the once-prevailing “Clovis First” hypothesis. The Clovis people, who are named after their characteristic fluted stone spearheads first found near Clovis, New Mexico, were thought to have been the first inhabitants of the Americas. The earliest Clovis points show up in the archaeological record about 13,500 years ago. It was long believed that they got here by crossing the Bering Land Bridge sometime before then.

Recently, several before-Clovis sites have been discovered in the Americas. Fossilized feces more than 14,000 years old have been found in Oregon’s Paisley Caves. Stone tools alongside mastodon bones in Florida were recently found to be 14,550 years old. And much further away from northwestern Canada, in southern Chile, humans inhabited Monte Verde at least 14,000 years ago (and possibly even earlier).

Alternate migration routes have been put forth in the past, such as the controversial Solutrean hypothesis, which posits that the first Americans actually came from Europe, not Asia, via a North Atlantic route. But many anthropologists now favor a Pacific coastal route to explain how the first people got to the Americas, though more research is needed to fully understand how these intrepid settlers traveled (perhaps by boat).

“Such a study has been needed for quite some time now,” said Vanderbilt College archaeologist Tom Dillehay, who wasn’t involved in the new study. Dillehay, whose excavations at Monte Verde in the 1970s revealed the site's ancient age, challenging the Clovis First theory—and long considered suspect as a result—told mental_floss that this type of study is just the beginning. “I would like to see more studies of this nature done in other areas of the corridor to confirm this hypothesis—especially at the entrance and exits points of the corridor.”

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holidays
A Brief History of Black Friday
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iStock

The unofficial start of the holiday shopping season is often referred to as the busiest shopping day of the year. But where did this tradition start and just how big is it? Here are the answers to a few frequently asked questions about Black Friday. Hopefully they'll give you some good talking points tomorrow, when you line up outside Best Buy at 4 a.m.

HOW DID BLACK FRIDAY BECOME SUCH A BIG SHOPPING DAY?

It's hard to say when the day after Thanksgiving turned into a retail free-for-all, but it probably dates back to the late 19th century. At that time, store-sponsored Thanksgiving parades were common, and once Santa Claus showed up at the end of the parade, the holiday shopping season had officially commenced.

In those days, most retailers adhered to an unwritten rule that holiday shopping season didn't start until after Thanksgiving, so no stores would advertise holiday sales or aggressively court customers until the Friday immediately following the holiday. Thus, when the floodgates opened that Friday, it became a huge deal.

SO RETAILERS WERE ALWAYS HOPING FOR AN EARLY THANKSGIVING?

You bet. They weren't just hoping, though; they were being proactive about it. In 1939, the Retail Dry Goods Association warned Franklin Roosevelt that if the holiday season wouldn't begin until after Americans celebrated Thanksgiving on the traditional final Thursday in November, retail sales would go in the tank. Ever the iconoclast, Roosevelt saw an easy solution to this problem: he moved Thanksgiving up by a week. Instead of celebrating the holiday on its traditional day—November 30th that year—Roosevelt declared the next-to-last Thursday in November to be the new Thanksgiving, instantly tacking an extra week onto the shopping season.

BRILLIANT! HOW DID THAT WORK OUT?

Not so well. Roosevelt didn't make the announcement until late October, and by then most Americans had already made their holiday travel plans. Many rebelled and continued to celebrate Thanksgiving on its "real" date while derisively referring to the impostor holiday as "Franksgiving." State governments didn't know which Thanksgiving to observe, so some of them took both days off. In short, it was a bit of a mess.

By 1941, though, the furor had died down, and Congress passed a law that made Thanksgiving the fourth Thursday in November, regardless of how it affected the shopping day that would become known as Black Friday.

WHY CALL IT BLACK FRIDAY?

If you ask most people why the day after Thanksgiving is called Black Friday, they'll explain that the name stems from retailers using the day's huge receipts as their opportunity to "get in the black" and become profitable for the year. The first recorded uses of the term "Black Friday" are a bit less rosy, though.

According to researchers, the name "Black Friday" dates back to Philadelphia in the mid-1960s. The Friday in question is nestled snugly between Thanksgiving and the traditional Army-Navy football game that's played in Philadelphia on the following Saturday, so the City of Brotherly Love was always bustling with activity on that day. All of the people were great for retailers, but they were a huge pain for police officers, cab drivers, and anyone who had to negotiate the city's streets. They started referring to the annual day of commercial bedlam as "Black Friday" to reflect how irritating it was.

SO WHERE DID THE WHOLE "GET IN THE BLACK" STORY ORIGINATE?

Apparently store owners didn't love having their biggest shopping day saddled with such a negative moniker, so in the early 1980s someone began floating the accounting angle to put a more positive spin on the big day.

DO RETAILERS REALLY NEED BLACK FRIDAY TO TURN AN ANNUAL PROFIT?

Major retailers don't; they're generally profitable—or at least striving for profitability—throughout the entire year. (A company that turned losses for three quarters out of every fiscal year wouldn't be a big hit with investors.) Some smaller outlets may parlay big holiday season sales into annual profits, though.

IS BLACK FRIDAY REALLY THE BIGGEST SHOPPING DAY OF THE YEAR?

It's certainly the day of the year in which you're most likely to be punched while reaching for a Tickle Me Elmo doll, but it might not be the busiest day in terms of gross receipts. According to Snopes.com, Black Friday is generally one of the top days of the year for stores, but it's the days immediately before Christmas—when procrastinators finally get shopping—that stores make the serious loot. Black Friday may, however, be the busiest day of the year in terms of customer traffic.

Snopes's data shows the 10-year span from 1993 to 2002, and in that interval Black Friday was never higher than fourth on the list of the year's busiest shopping days by sales volume. In 2003 and 2005 Black Friday did climb to the top of the pile for sales revenue days, but it still gets stiff competition from the week leading up to Christmas, particularly the Saturday right before the big day.

DO PEOPLE REALLY GET INJURED ON BLACK FRIDAY?

Sadly, yes. One of the most tragic Black Friday incidents happened in 2008, when 34-year-old seasonal employee Jdimytai Damour was killed after a crowd of hundreds of people from the approximately 2000 people waiting outside knocked him own and stampeded over his back after the doors opened at 5 a.m. at the Wal-Mart on Long Island, New York.

In 2010 in Buffalo, New York, several shoppers were trampled trying to get into a Target. One of the victims, Keith Krantz—who was pinned against a metal door support and then shoved to the ground—told a CNN affiliate he thought he would be killed. “At that moment, I was thinking I don't want to die here on the ground,” Krantz said.

In Murray, Utah, 15,000 shoppers swamped a mall with such force, the local police had to respond to break up skirmishes and fistfights, and keep shoppers from ransacking stores.

In 2008, a fight broke out between a young girl and a man at another Wal-Mart store in Columbus, Ohio, over a 40-inch Samsung flat-screen television. It was $798, marked down from $1000. The New York Times reported that the not-so-aptly-named Nikki Nicely, 19, leaped onto a fellow shopper’s back and began pounding his shoulders violently when he attempted to purchase the television. “That’s my TV!” shouted Ms. Nicely, who then took an elbow to the face. “That’s my TV!” The fight was broken up by a police officer and security guard. “That’s right,” Nicely cried as her adversary walked away. “This here is my TV!”

HOW CAN THIS KIND OF THING BE AVOIDED?

In an effort to keep a few would-be clients from personal injury law firms, the Occupational Safety and Health Administration (OSHA) created a special checklist for retailers expecting large crowds.

So what’s OSHA’s advice? Consider using bullhorns. Hire a team of police officers. Be prepared for “crowd crushing” and “violent acts.” Set up barricades. And, above all else, if charging shoppers come running, stay out of the way.

Haley Sweetland Edwards contributed to this story, portions of which originally appeared in 2009.

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Pop Culture
A Speedy History of the Hess Truck
Hess Corporation
Hess Corporation

Unless you know someone crazy about air fresheners or caffeine pills, holiday gifts purchased at gas stations don’t usually provoke much excitement. But if you were one of the millions who grew up in the northeast, the annual release of the Hess toy truck at Hess gas stations—usually green, always labeled with a Hess logo, always boxed with batteries—was and is as much a part of the holiday as Santa Claus and his sleigh.

The idea for an affordable, quality children’s toy sold at service stations at thousands of Hess locations in 16 states was courtesy of Leon Hess, the college dropout-turned-fuel magnate who began selling oil door-to-door in 1933 and graduated to gas stops by 1960. Hess decided he would trump the cheap merchandise given away by gas stations—mugs, glassware—by commissioning a durable, feature-heavy toy truck modeled after the first oil tanker he ever bought for his company. Unlike most toys of the era, it would have headlights that really worked and a tank that kids could either fill up or drain with water.

Most importantly, Hess insisted it come with batteries—he knew the frustration suffered by kids who tore into a holiday present, only to discover they’d have to wait until it had a power source before it could be operated.

The Hess Tanker Truck went on sale in 1964 for $1.29 and sold out almost instantly. Hess released the toy again in 1965, and then introduced the Voyager Tanker Ship in 1966. For the next 50 years, hardly a year went by without Hess issuing a new vehicle that stood up to heavy play and offered quality and features comparable to the “real” toys on store shelves. Incredibly, fathers would wait in line for hours for an opportunity to buy one for their child.

The toy truck became so important to the Hess brand and developed such a strong following that when the company was bought out in 2014 and locations converted to the Speedway umbrella, new owners Marathon Petroleum promised they would keep making the Hess trucks. They’re now sold online, with the newest—the Dump Truck and Loader, complete with working hydraulics and STEM lesson plans—retailing for $33.99. Bigger, better toy trucks may be out there, but a half-century of tradition is hard to replicate.

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