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Abstract: By approximately 100 BC Ecuadorian traders had established maritime commercial routes extending from Chile to Colombia. Historical sources indicate that they transported their merchandise in large, ocean-going sailing rafts made of balsa logs. By about AD 700 the data show that Ecuadorian metalworking technology had reached the west coast of Mexico but remained absent in the region between Guerrero and lower Central America. Archaeologists have argued that this technology was most plausibly transmitted via balsa raft exchange routes. This article uses mathematical simulation of balsa rafts’ mechanical and material characteristics to determine whether these rafts were suitable vessels for...

For the first time in nearly 500 years, a full-size balsa-wood raft just like those used in pre-Columbian Pacific trade took to the water on Sunday, May 10. Only this time, instead of the Pacific coast between Mexico and Chile where such rafts carried goods between the great civilizations of the Andes and Mesoamerica as long as a millennium ago, the replica raft was floated in the Charles River basin. The faithful reproduction of the ancient sailing craft, built from eight balsa logs brought from Ecuador for the project, was created in less than six weeks by 30 students in...

South Americans helped colonise Easter Island centuries before Europeans reached it. Clear genetic evidence has, for the first time, given support to elements of this controversial theory showing that while the remote island was mostly colonised from the west, there was also some influx of people from the Americas. ~~~snip~~~ Now Erik Thorsby of the University of Oslo in Norway has found clear evidence to support elements of Heyerdahl's hypothesis. In 1971 and 2008 he collected blood samples from Easter Islanders whose ancestors had not interbred with Europeans and other visitors to the island. Thorsby looked at the HLA genes,...

Lichen are eating away at the Moai, the 400 volcanic stone heads that dominate the skyline of Easter Island. Earlier treatments to preserve these ancient monoliths at this World Heritage Site called for filling some of the most deeply corroded stones with concrete. Unfortunately, experts think that this treatment might have worsened the damaging effects of the wind and saltwater that batter the Polynesian island. In fact, the lichen may even be feeding off the concrete used to save the Moai. Professor Lorenzo Casamenti and five of his students from the restoration school Lorenzo de' Medici in Florence have found...

Europeans raced across oceans and continents during the Age of Exploration in search of territory and riches. But when they reached the South Pacific, they found they had been beaten there by a more humble traveler: the sweet potato. Now, a new study suggests that the plant's genetics may be the key to unraveling another great age of exploration, one that predated European expansion by several hundred years and remains an anthropological enigma. Humans domesticated the sweet potato in the Peruvian highlands about 8000 years ago, and previous generations of scholars believed that Spanish and Portuguese explorers introduced the crop...

Will Dunham October 23, 2014 They lived on a remote dot of land in the middle of the Pacific, 2,300 miles (3,700 km) west of South America and 1,100 miles (1,770 km) from the closest island, erecting huge stone figures that still stare enigmatically from the hillsides. But the ancient Polynesian people who populated Easter Island, or Rapa Nui, were not as isolated as long believed. Scientists who conducted a genetic study, published on Thursday in the journal Current Biology, found these ancient people had significant contact with Native American populations hundreds of years before the first Westerners reached the...

Bishop Museum's Dr. Mulrooney conducted 6-year study on Rapa Nui Bishop Museum's assistant anthropologist, Dr. Mara Mulrooney, conducted a six-year study on Rapa Nui, also known as Easter Island, about the island's theoretical civilization collapse. Results from her groundbreaking doctoral dissertation entitled "Continuity or Collapse? Diachronic Settlement and Land Use in Hanga Ho'onu, Rapa Nui (Easter Island)" are outlined in an article published in the December issue of the Journal of Archaeological Science. This new evidence debunks previous theories that the islanders "self-destructed" before Europeans first visited in 1722. As popularized in Jared Diamond's 2005 book Collapse, Rapa Nui is...

Chemical analyses of teeth from 41 human skeletons excavated on Easter Island revealed the inhabitants ate rats rather than seafood; Here, Moai statues at Ahu Tongariki on the south-eastern part of the island, where 26 of the skeletons were found. The inhabitants of Easter Island consumed a diet that was lacking in seafood and was, literally, quite ratty. The island, also called Rapa Nui, first settled around A.D. 1200, is famous for its more than 1,000 "walking" Moai statues, most of which originally faced inland. Located in the South Pacific, Rapa Nui is the most isolated inhabited landmass on Earth;...

Hundreds, perhaps thousands, of visitors to the island have been astonished to see that, indeed, Easter Island statues have bodies

The scattered islands of the vast Pacific Ocean were settled by seafarers who set out from the eastern coasts and islands of Asia and traveled thousands of kilometers by boat. Meanwhile pre-Columbian South America was populated by people who crossed a now-vanished land bridge far to the north. Did these two groups ever meet in the New World? There's a good chance of that, according to a new study, which finds evidence that Easter Islanders may have reached South America and mixed with the Native Americans already there. University of Oslo immunologist Erik Thorsby first began analyzing the people of...

The head statuary of Easter Island is instantly recognizable to people all over the world, but who would have guessed that, lurking beneath the soil, these famous mugs also had bodies? The Easter Island Statue Project Conservation Initiative, which is funded by the Archaeological Institute of America, has been excavating two of the enormous figures for the last several years, and have found unique petroglyphs carved on their backs that had been conserved in the soil. Their research has also yielded evidence of how the carvers were paid with food such as tuna and lobster, as well as clues to...

Did Easter Island's famous statues rock, or roll? After doing a little rocking out themselves, researchers say they're sure the natives raised the monumental figures upright, and then rocked them back and forth to "walk" them to their positions. Their findings mesh with a scenario that casts the Polynesian island's natives in the roles of resourceful engineers working with the little that they had on hand, rather than the victims of a self-inflicted environmental catastrophe. "A lot of what people think they know about the island turns out to be not true," Carl Lipo, an archaeologist at California State University...

ISLE OF WIGHT, England - A 100-year-old wooden paddle used in Polynesian dance ceremonies before becoming a household ornament fetched nearly $340,000 at a British auction. Bidders in London and Brussels quickly upped the price on the paddle after bidding started at just $4,629, The Times of London reported. The ceremonial paddle, known as a rapa, originated on Easter Island in the southeastern Pacific, where performers used the paddles to accentuate movements in dances and ceremonies. Tim Smith of Isle of Wight auctioneers Island Auction Rooms in Shanklin set a guide price of $15,341. "When the money started going up,...

A team of British archaeologists has solved the mystery of how the famous statues dotting the landscape of Easter Island acquired their distinctive red hats. Dr Sue Hamilton from University College London and Dr Colin Richards from the University of Manchester believe the hats were constructed in a hidden quarry and then rolled down from the slopes of an ancient volcano. They are the first archaeologists ever to have excavated the Puna Pau quarry on the tiny Pacific island. The team have discovered the mystery behind the red hats worn by the Easter Island statues Around 70 intact giant red...

Archaeologists have solved an ancient mystery surrounding the famous Easter Island statues. At 2,500 miles off the coast of Chile, the island is the world's most remote place inhabited by people. Up to 1,000 years ago, the islanders started putting giant red hats on the statues. The research team, from the University of Manchester and University College London, think the hats were rolled down from an ancient volcano. Dr Colin Richards and Dr Sue Hamilton are the first British archaeologists to work on the island since 1914. They pieced together a series of clues to discover how the statues got...

The oldest dates were only about 800 years old, implying that occupation began around 1200 A.D. The dates from layers closer to the surface were progressively younger, which is inconsistent with the possibility that somehow our samples were contaminated with modern carbon. There was really no way to explain these numbers, at least not within the conventional model of Rapa Nui's development... Lipo and I took a closer look at the evidence for earlier human settlement. We evaluated 45 previously published radiocarbon dates indicating human presence more than 750 years ago using a "chronometric hygiene" protocol. We rejected dates measured...

Did humans devastate Easter Island on arrival? 19:00 09 March 2006 Bob Holmes Early settlers to the remote Easter Island stripped the island’s natural resources to erect towering stone statues (Image: Terry L Hunt)Related Articles What caused the collapse of Easter Island civilisation? 25 September 2004 Last of the great migrations 24 April 2004 Histories: Carteret's South Sea trouble 11 February 2006 The first humans may have arrived on Easter Island several centuries later than previously supposed, suggests a new study. If so, these Polynesian settlers must have begun destroying the island's forests almost immediately after their arrival. Easter Island...

Did humans decimate Easter Island on arrival? 19:00 09 March 2006 NewScientist.com news service Bob Holmes Early settlers to the remote Easter Island stripped the island’s natural resources to erect towering stone statues (Image: Terry L Hunt)The first humans may have arrived on Easter Island several centuries later than previously supposed, suggests a new study. If so, these Polynesian settlers must have begun destroying the island's forests almost immediately after their arrival. Easter Island has often been cited as the classic example of a human-induced ecological catastrophe. The island – one of the most remote places on Earth – was...

Release Date: Aug. 31, 2005 Contact: Will Dube (585) 475-4954 or wjduns@rit.edu Groundbreaking Research Sheds Light on Ancient Mystery RIT researcher creates new population model to help predict and prevent societal collapse A researcher at Rochester Institute of Technology is unraveling a mystery surrounding Easter Island. William Basener, assistant professor of mathematics, has created the first mathematical formula to accurately model the island’s monumental societal collapse. Between 1200 and 1500 A.D., the small, remote island, 2,000 miles off the coast of Chile, was inhabited by over 10,000 people and had a relatively sophisticated and technologically advanced society. During this time,...

GUEST OP-ED CONTRIBUTOR Los Angeles — NEW Year's weekend traditionally is a time for us to reflect, and to make resolutions based on our reflections. In this fresh year, with the United States seemingly at the height of its power and at the start of a new presidential term, Americans are increasingly concerned and divided about where we are going. How long can America remain ascendant? Where will we stand 10 years from now, or even next year? Such questions seem especially appropriate this year. History warns us that when once-powerful societies collapse, they tend to do so quickly and...