Sundaland

Where do we come from? Paul Rodgers charts some of the latest work exploring the movement and develo

Where do we come from? It’s an abiding question, and one that has been only partially answered by science. While little doubt remains that our species evolved in East Africa, details of its spread around the world are still obscure. And the further back we peer, the harder it is to get a clear picture.

What evidence we have falls into three categories: physical remains, such as stone tools and cave paintings, can reveal the movement of technology and culture, but sometimes these spread not just as groups move, but between peoples. Linguistic studies, comparing modern languages to find their common roots, have the same problem. But genetics, looking at how minor mutations have spread through the world’s population, does not.

One of the more intriguing suggestions in the past decade is that the initial spread of humans from Africa extended along the southern coastline of Eurasia, to what is now Southeast Asia, then a subcontinent called Sundaland that was twice the size of modern India, stretching from Burma to Borneo. The flooding of this fertile paradise as the last Ice Age ended forced these people to adapt to new lifestyles, flee to new lands, or become extinct.

DNA research led by Leeds University’s Martin Richards, one of only two professors of archaeogenetics in the world, supports this idea, showing that the stone-age people on the southeastern shore of Sundaland expanded across the newly formed island chains 12,000 years ago.

The new theory, published in the journal Molecular Biology and Evolution, is likely to draw bitter criticism from supporters of the old consensus, based on linguistics, that the area is populated today by descendants of a rice-growing people called the Austronesians who expanded from Taiwan just 4,000 years ago. “Some quite forceful archaeologists have been extremely reluctant to accept this,” says Professor Richards. “And I haven’t met a single linguist willing to give up the out-of-Taiwan argument.”

The Austronesians supposedly supplanted the indigenous hunter-gatherers, who first arrived 50,000 years ago yet were considered so insignificant that they have not even been named.

“That was a great mistake,” Professor Richards says. His team is the first to use the full mitochondrial genome rather than fragments, giving it a much more detailed picture of population movements in the distant past. Their results show that the biggest migration went not from Taiwan, but to it, and occurred much earlier.

“The radical explanation is that the linguists are wrong and that these people spread out during the last episode of post-glacial expansion,” he said. The Austronesians may have been like the Normans, a small elite group that arrived later and took control of a larger, indigenous population, he
suggests.

Sundaland was the biggest area to be drowned as the glaciers started to retreat 19,000 years ago, raising sea levels by more than 100 metres. The second largest, Doggerland, now the southern North Sea, was submerged towards the end of the Ice Age, separating the British Isles from continental Europe.

The people living in the southeast Asian subcontinent would have been particularly hard hit by three great sea level surges, 14,000, 11,500 and 7,600 years ago, believed to have been caused by catastrophic events as the ice sheets in North America and Antarctica retreated.

Professor Richards argues that many populations will have been wiped out as their land disappeared beneath the waves.

But one group could have been pre-adapted to the new environment, which had fewer inland plains and meandering riverbanks and twice as much coastline – the people of southeast Sundaland, who may have had a maritime culture linking them to the nearby Wallacean island group, named after the Victorian naturalist Alfred Russel Wallace, which includes New Guinea.

What is certain is that, as sea levels rose, these people began to spread throughout the region, according to mitochondrial mutations, which are passed down from mother to child. A parallel study of stone-age tools by other members of the team supports the theory, showing the spread of a stone tool technology called “flake and blade” throughout the region.

Professor Richards hopes to do further work on the Sundaland population, and is already working on a study of y chromosomes, which are only passed down through the male line. Marine archaeology could also shed more light on the drowned culture, though there are no immediate plans to begin looking beneath the shallow waters of the Sundaland Shelf.

In the original version of this article it was suggested the idea that Europeans are descended from a group of people who settled in what is now Southeast Asia, then a subcontinent called Sundaland, was mooted by Dr Stephen Oppenheimer in his 1998 book Eden in the East. We fully accept that this was not the case and apologise to Dr Oppenheimer for the error.

Paul Rodgers is a freelance science, medicine and technology journalist. He was born in Derby, the son of a science teacher, and emigrated with his family to the Canadian prairies when he was nine. He began writing for a student newspaper in Winnipeg in 1982 and had staff positions on several Canadian dailies. Despite his return to these shores 15 years ago, he still talks with a funny accent.
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After a year of chaos, MPs from all parties are trying to stop an extreme Brexit

The Greens are calling for a cross-party commission on Brexit.

One year ago today, I stood on Westminster Bridge as the sun rose over a changed country. By a narrow margin, on an unexpectedly high turnout, a majority of people in Britain had chosen to leave the EU. It wasn’t easy for those of us on the losing side – especially after such scaremongering from the leaders of the Leave campaign – but 23 June 2016 showed the power of a voting opportunity where every vote counted.

A year on from the vote, and the process is in chaos. Perhaps we shouldn’t be surprised. The Leave campaign deliberately never spelled out any detailed plan for Brexit, and senior figures fought internal battles over which model they preferred. One minute Britain would be like Norway, then we’d be like Canada – and then we’d be unique. After the vote Theresa May promised us a "Red, White and Blue Brexit" – and then her ministers kept threatening the EU with walking away with no deal at all which, in fairness, would be unique(ly) reckless. 

We now have our future being negotiated by a government who have just had their majority wiped out. More than half of voters opted for progressive parties at the last election – yet the people representing us in Brussels are the right-wing hardliners David Davis, Liam Fox and Boris Johnson.

Despite widespread opposition, the government has steadfastly refused to unilaterally guarantee EU citizens their rights. This week it has shown its disregard for the environment as it published a Queen’s Speech with no specific plans for environmental protection in the Brexit process either. 

Amid such chaos there is, however, a glimmer of hope. MPs from all parties are working together to stop an extreme Brexit. Labour’s position seems to be softening, and it looks likely that the Scottish Parliament will have a say on the final deal too. The Democratic Unionist Party is regressive in many ways, but there’s a good chance that the government relying on it will soften Brexit for Northern Ireland, at least because of the DUP's insistence on keeping the border with Ireland open. My amendments to the Queen’s speech to give full rights to EU nationals and create an Environmental Protection Act have cross-party support.

With such political instability here at home – and a growing sense among the public that people deserve a final say on any deal - it seems that everything is up for grabs. The government has no mandate for pushing ahead with an extreme Brexit. As the democratic reformers Unlock Democracy said in a recent report “The failure of any party to gain a majority in the recent election has made the need for an inclusive, consensus based working even more imperative.” The referendum should have been the start of a democratic process, not the end of one.

That’s why Greens are calling for a cross-party commission on Brexit, in order to ensure that voices from across the political spectrum are heard in the process. And it’s why we continue to push for a ratification referendum on the final deal negotiated by the government - we want the whole country to have the last word on this, not just the 650 MPs elected to the Parliament via an extremely unrepresentative electoral system.

No one predicted what would happen over the last year. From the referendum, to Theresa May’s disastrous leadership and a progressive majority at a general election. And no one knows exactly what will happen next. But what’s clear is that people across this country should be at the centre of the coming debate over our future – it can’t be stitched up behind closed doors by ministers without a mandate.

Caroline Lucas is the MP for Brighton Pavilion.

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