Enlarge (credit: Jarcosa)

Rapa Nui, often referred to as Easter Island, is one of the most remote populated islands in the world. It's so distant that Europeans didn't stumble onto it until centuries after they had started exploring the Pacific. When they arrived, though, they found that the relatively small island supported a population of thousands, one that had built imposing monumental statues called moai. Arguments over how this population got there and what happened once it did have gone on ever since.

Some of these arguments, such as the idea that the island's indigenous people had traveled there from South America, have since been put to rest. Genomes from people native to the island show that its original population was part of the Polynesian expansion across the Pacific. But others, such as the role of ecological collapse in limiting the island's population and altering its culture, continue to be debated.

Researchers have now obtained genome sequence from the remains of 15 Rapa Nui natives who predate European contact. And they indicate that the population of the island appears to have grown slowly and steadily, without any sign of a bottleneck that could be associated with an ecological collapse. And roughly 10 percent of the genomes appear to have a Native American source that likely dates from roughly the same time that the island was settled.

Enlarge / A scientist defeathers one of the birds used in hands-on experiments to replicate Neanderthal butchering and cooking methods. (credit: Mariana Nabais)

Archaeologists seeking to learn more about how Neanderthals prepared and cooked their food conducted a series of hands-on experiments with small fowl using flint flakes for butchering. They found that the flint flakes were surprisingly effective for butchering the birds, according to their new paper published in the journal Frontiers in Environmental Archaeology. They also concluded that roasting the birds damages the bones to such an extent that it's unlikely they would be preserved in the archaeological record.

According to the authors, Neanderthals were able to thrive for over 200,000 years across a broad range of geographical regions, so naturally archaeologists are interested in how they sustained themselves. There has been research into their killing and hunting of large game. Neanderthals were expert hunters known to kill bears and other carnivores. A pair of lion fibula from the Middle Paleolithic found in eastern Iberia with cut marks indicates the lion was butchered, while other lion bones found in Southwestern France from the same period had cut marks indicative of skinning.

And as we reported just last year, researchers found evidence of what might be the earliest example of lion hunting yet known, based on a close forensic analysis of a cave lion skeleton showing evidence of injury by a wooden spear some 48,000 years ago.

Enlarge / Statues depicting the high dignitary Nefer and his wife (Abusir, Egypt). (credit: Martin Frouz/Czech Institute of Egyptology/Charles University.)

Repetitive stress injuries are a common feature of modern life, especially for office workers who spend a good chunk of their working days at a desk typing on a computer. Apparently, scribes in ancient Egypt suffered from their own distinctive repetitive stress injuries, according to a new paper published in the journal Scientific Reports that provides fresh insights into how these scribes lived and worked during the third millennium BCE.

Egyptian kings, royal family members, and other elite people from this Fifth Dynasty era were buried in tombs in the acropolis at Abusir rather than at neighboring Giza, which by then had largely filled up thanks to all the activity during the Fourth Dynasty. The Czech Institute of Egyptology at Charles University in Prague has been conducting research at the site since 1960, leading to the discovery of nearly 200 tombs dating back to the Old Kingdom (between 2700 and 2180 BCE). The first human skeletons were excavated in 1976, and there are currently 221 Old Kingdom skeletons in the collection, 102 of which are male.

Scientists started looking into the health status and markers for specific activities in 2009, but it wasn't until quite recently that there were enough skeletons to conduct a comprehensive study. That's what Petra Brukner Havelková of Charles University and the National Museum in Prague, Czech Republic, and colleagues set out to do, analyzing the remains of 69 adult males of different social status and different ages at which they died.

Enlarge / New research lends further credence to the "population crash" theory about Easter Island being just a myth. (credit: Arian Zwegers/CC BY 2.0)

For centuries, Western scholars have touted the fate of the native population on Easter Island (Rapa Nui) as a case study in the devastating cost of environmentally unsustainable living. The story goes that the people on the remote island chopped down all the trees to build massive stone statues, triggering a population collapse. Their numbers were further depleted when Europeans discovered the island and brought foreign diseases, among other factors. But an alternative narrative began to emerge in the 21st century that the earliest inhabitants actually lived quite sustainably until that point. A new paper published in the journal Science Advances offers another key piece of evidence in support of that alternative hypothesis.

As previously reported, Easter Island is famous for its giant monumental statues, called moai, built some 800 years ago and typically mounted on platforms called ahu. Scholars have puzzled over the moai on Easter Island for decades, pondering their cultural significance, as well as how a Stone Age culture managed to carve and transport statues weighing as much as 92 tons. The first Europeans arrived in the 17th century and found only a few thousand inhabitants on a tiny island (just 14 by 7 miles across) thousands of miles away from any other land. Since then, in order to explain the presence of so many moai, the assumption has been that the island was once home to tens of thousands of people.

But perhaps they didn't need tens of thousands of people to accomplish that feat. Back in 2012, Carl Lipo of Binghamton University and Terry Hunt of the University of Arizona showed that you could transport a 10-foot, 5-ton moai a few hundred yards with just 18 people and three strong ropes by employing a rocking motion. [UPDATE: An eagle-eyed reader alerted us to the 1980s work of Czech experimental archaeologist Pavel Pavel, who conducted similar practical experiments on Easter Island after being inspired by Thor Heyerdahl's Kon Tiki. Pavel concluded that just 16 men and one leader were sufficient to transport the statues.]

Enlarge / Artificially modified skull from a female Viking individual in Havor, Hablingbo parish, Gotland. (credit: © SHM/Johnny Karlsson 2008-11-05/CC BY 2.5 SE)

German archaeologists discovered that the skulls of three medieval Viking women found on the Swedish island of Gotland in the Baltic Sea showed evidence of an unusual procedure to elongate their skulls. The process gave them an unusual and distinctive appearance, according to a paper published in the journal Current Swedish Archaeology. Along with evidence that the Viking men from the island may have deliberately filed their teeth, the discovery sheds light on the role body modification may have played in Viking culture

When people hear about Viking body modification, they probably think of Viking tattoos, particularly since the History Channel series Vikings popularized that notion. But whether actual Vikings sported tattoos is a matter of considerable debate. There is no mention of tattoos in the few Norse sagas and poetry that have survived, although other unusual physical characteristics are often mentioned, such as scars.

The only real evidence comes from a 10th century travel account by an Arab traveler and trader named Ahmad Ibn Fadlan, whose travel account, Mission to the Volga, describes the Swedish Viking traders ("Rusiyyah") he met in the Middle Volga region of Russia. "They are dark from the tips of their toes right up to their necks—trees, pictures, and the like," Ibn Fadlan wrote. But the precise Arabic translation is unclear, and there is no hard archaeological evidence, since human skin typically doesn't preserve for centuries after a Viking burial.