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Why a Thriving Civilization in Malta Collapsed 4,000 Years Ago

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The mysteries of an ancient civilization that survived for more than a millennium on the island of Malta—and then collapsed within two generations—have been unravelled by archaeologists who analyzed pollen buried deep within the earth and ancient DNA from skulls and bones. It’s part of a field of work that is expanding the use of archaeological techniques into environments where they were previously thought to be unusable.

The Temple Culture of the Maltese archipelago in the Mediterranean began nearly 6,000 years ago and at its height probably numbered several thousand people—far denser than the people of mainland Europe could manage at the time. The island people constructed elaborate sacred sites, such as the famous Ġgantija temple complex, and their buildings are among the earliest free-standing buildings known. But, after 1,500 years, they were gone.

Islands can be used as laboratories for understanding change in the wider world.

Caroline Malone, prehistory specialist at Queen’s University Belfast, Northern Ireland, wanted to understand how the fragile island ecology sustained the people for so long despite drought, violent storms, and soil erosion—and why it ultimately failed. She ran an ambitious project, Fragsus, which drew on multiple tools to find some answers. Scientists drilled earth cores ranging from eight to 30 meters deep, dating the sediment using carbon dating to understand which time period it referred to. They counted the pollen at two-centimeter intervals and analyzed individual pollen grains using chemical signatures imprinted by the surrounding environment to understand what nutrients the parent plants were absorbing from the ground. Molluscs embedded in the soil revealed glimpses of the landscape since “snails,” Malone said, “are very particular about where they live and don’t move far.”

Meanwhile, other specialists assessed the wear and tear on tens of thousands of human bones from a burial site to understand the islanders’ lifestyles. The team broke new ground by analyzing bone with a technique called ancient DNA (aDNA) analysis, says Malone. It had previously been thought that the warmth of any climate south of the Alps would destroy such old DNA. But it turned out that skulls buried at a relatively cool five meters’ depth still harbored aDNA within thick bone behind the ear.

From what they’ve uncovered, the team thinks that these people understood the importance of soil management to fend off starvation. Within a hundred years of their arrival on the tiny, 316 square-kilometer archipelago they had felled most of the trees, exposing the ground to drastic erosion.

To survive, they reared dairy animals rather than prioritizing meat—killing off newborn livestock before they had a chance to graze. They mixed livestock manure back into the soil and may even have made back-breaking journeys carting soil washed into the valleys back uphill to refresh the upland fields. The evidence for this lies in strange, parallel ruts in the ground that may be cart tracks, as well as signs from the skeletons that soft tissue had sometimes been worn completely away by hard, repetitive activity. Oddly, says Malone, they ate almost no fish.

To achieve such complex collaborative effort something powerful must have held the community together: the temples. Until now, the Temple Culture was thought to have centered on the worship of a mother goddess, but Malone thinks it was more of a clubhouse culture, focused on ritual and feasting but where food—rather than a deity—was revered. In the complexes it is now clear that the people displayed their livestock and harvests on special benches and altars, feasted, and also stored food. There is no skeletal evidence of violent death and no fortifications, said Malone. Instead the society appears to have survived through cooperation and sharing.

Despite the society’s strength and success, as centuries passed the soil erosion and climate conditions worsened, as evidenced by the different types of pollen in the soil, the diminishing number of tree remains and the human bones wracked with evidence of dietary deficiencies. In the final centuries of the Temple Culture, between 2600 BC and 2400 BC, half of those dying were children. Other factors likely contributed, said Malone. Adult skulls from this time are greatly varied, their DNA indicating the arrival of immigrants from as far as the Eurasian Steppes and sub-Saharan Africa, possibly causing population pressure and new diseases.

The decisive blow may have been an unknown catastrophe that occurred around 2350 BC, a period during which, according to tree ring analysis, the whole region suffered a catastrophic climate event—possibly a dust cloud caused by a volcanic eruption.

Palaeo environmental DNA in sediment cores is providing a long term perspective of how Spain’s Canary Islands weathered past climate change.Photograph by Lea de Nascimento

Islands can be used as laboratories for understanding change in the wider world, Malone says. However, the geographical peculiarities of islands can also present problems by rendering conventional research techniques redundant. In Spain’s Canary Islands, for example, ancient pollen is not well-preserved in the local terrain. What’s more, many important plants on the islands—such as its emblematic laurel trees—produce no, or little, pollen, and the environmental conditions have also eroded other pieces of evidence, such as macrofossils.

Lea de Nascimento, a specialist in ecology at the Universidad de La Laguna in Tenerife said: “We lack (good preservation of) all the conventional proxies.” She wants to piece together the history of vegetation on the Canaries—in particular, what they were like before humans arrived over 2,000 years ago. To do so, she is using a new palaeoecological technique called palaeoenvironmental DNA analysis.

“If you have a long perspective you will know the resilience of ecosystems.”

Environmental DNA (eDNA) is left in soil or water by microorganisms, plant and animal species, and scientists increasingly scan for it to find out what’s going on in today’s environment. It is a relatively new palaeoecological tool, which has so far been used in the coldest and driest places because of its vulnerability to warmth and humidity. But de Nascimento is now probing for it in core samples spanning several thousand years from the islands.

For the ISLANDPALECO project, she has spent two years learning from experts at a dedicated laboratory in New Zealand how to search for palaeo environmental DNA in sediment cores. After a year of setbacks, she has now found 100-year-old DNA of a much richer variety than can be found in the pollen record. She is still hoping to retrieve older palaeo environmental DNA. “If you have a long perspective you will know the resilience of ecosystems,” she said. “It will help us understand how an ecosystem will react if we keep putting pressure on it in the future—or in response to climate change.” She says that knowing more about past ecosystems will also help today’s conservationists restore landscapes depleted by humans and the animals they brought with them. “The problem,” she said, “is you could invest a lot of money restoring an ecosystem that was never there.”

Malta’s lost civilisation only lasted 1,500 years but it produced some of the oldest buildings still standing today.Graphic by Horizon

Aisling Irwin is a journalist specializing in science, environment, and development.

Nautilus



7 Comments on "Why a Thriving Civilization in Malta Collapsed 4,000 Years Ago"

  1. Gaia on Sun, 2nd Aug 2020 12:50 pm 

    In 2100, there will be no humans.

  2. Go Speed Racer on Sun, 2nd Aug 2020 6:54 pm 

    Thriving Civilization in Malta
    collapsed 4000 years ago
    because over multiple generations
    their libtards grew in wealth and
    power and implemented a covert plan
    to put everybody onto welfare and
    have a fake pandemic to destroy their
    economy and claim that people who
    burn down buildings and spray paint
    walls and shoot at their cops
    are “peaceful protesters”
    PROVING that liberalism is a mental disorder
    and when that reached critical mass,
    the Civilization in Malta collapsed
    4000 years ago leaving nothing but
    blowing sand and crumbling buildings.
    That is what their libtards wanted in
    the first place, and they succeeded
    4000 years ago and they are trying to
    succeed now in 2020 UNLESS you vote
    TRUMP 2020 JOIN the SILENT MAJORITY
    don’t even tell your wife JUST VOTE
    TRUMP and check ALL REPUBLICAN
    even that twisted horrid evil sinister
    raisin prune billionaire sick bitch
    Nancy Pelosi jsut vote her right the
    fuck out and VOTE REPUBLICAN so that
    Donald Trump can restore this great
    nation and once again we can
    call it OUR NATION instead of
    THAT nation that got destroyed by the wicked
    evil horrible terrible awful liberals
    ruled over by their disgusting masters
    of fake news George Soros Bill Gates
    Nancy Pelosi Adam Schiff
    how can ANYBODY support such pieces of
    dog shit as them,
    UNLESS you are mentally ill,
    DONT vote for them.
    vote republican Jump On IN the Water is Fine.

  3. Gaia on Mon, 3rd Aug 2020 12:42 pm 

    Time to defund the police and redirect the money to mental health, education and housing.

  4. Hello on Mon, 3rd Aug 2020 1:06 pm 

    >>> redirect the money to mental health, education

    negros cannot be educated beyond operating tv remote control. It’s either acknowledging that negros are half animal half man. Or it is to reduce normal people down to negro level by affirmative action to erase all differences. That is what’s happening in the West, now.

  5. Abraham van Helsing on Mon, 3rd Aug 2020 3:00 pm 

    South-African big retailer ShopRite to withdraw itself from Nigeria. Reason: “tough business environment” (read: massive looting)

    https://edition.cnn.com/2020/08/03/africa/shoprite-nigeria-exit-intl/index.html

    Over the years, the company has faced a number of challenges in Nigeria’s tough business climate, including the looting of its stores in response to xenophobic attacks against other African nationals in South Africa.
    In 2019, protesters set fire to many entrances leading into a busy mall housing ShopRite, looting groceries and toiletries from the Supermaket in Lagos, Nigeria’s commercial center.

    It is high time that “protesters” set fire to CNN offices.

  6. Go Speed Racer on Tue, 4th Aug 2020 8:07 am 

    LOL “defund police”.

    Vote Joe Biden to defund the police.

  7. Richard Guenette on Wed, 5th Aug 2020 3:36 pm 

    China should increase the number of its nuclear weapons to defend itself from the US military. China’s military is defensive, not offensive.

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