New Study: Modern Humans Had Many Failed Attempts to Settle in Europe

Women from the Samburu tribe receive a food donation given due to an ongoing drought, in the town of Oldonyiro, Isiolo county, Kenya, October 8, 2021. (Reuters File Photo)
Women from the Samburu tribe receive a food donation given due to an ongoing drought, in the town of Oldonyiro, Isiolo county, Kenya, October 8, 2021. (Reuters File Photo)
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New Study: Modern Humans Had Many Failed Attempts to Settle in Europe

Women from the Samburu tribe receive a food donation given due to an ongoing drought, in the town of Oldonyiro, Isiolo county, Kenya, October 8, 2021. (Reuters File Photo)
Women from the Samburu tribe receive a food donation given due to an ongoing drought, in the town of Oldonyiro, Isiolo county, Kenya, October 8, 2021. (Reuters File Photo)

Modern humans made several failed attempts to settle in Europe before eventually taking over the continent. This is the stark conclusion of scientists who have been studying the course of Homo sapiens' exodus from Africa tens of thousands of years ago, according to a report by The Guardian.

Researchers have recently pinpointed sites in Bulgaria, Romania and the Czech Republic where our ancestors' remains have been dated as being between 40,000 to 50,000 years old. However, bone analyses have produced genetic profiles that have no match among modern Europeans.

"These early settlements appear to have been created by groups of early modern humans who did not survive to pass on their genes. They are our species' lost lineages. The crucial point is that the demise of these early modern human settlers meant Neanderthals still occupied Europe for a further few thousand years before Homo sapiens eventually took over the continent," said Professor Chris Stringer of the Natural History Museum, London.

Modern humans first appeared in Africa around 200,000 years ago and slowly evolved across the continent before moving into western Asia around 60,000 years ago. Our ancestors then spread across the globe until every other species of hominin on the planet had been rendered extinct, including the Denisovans of East Asia and Homo floresiensis, the "hobbit folk" of Indonesia.

Neanderthals in Europe were one of the last hominin species to succumb, dying out around 39,000 years ago. However, recent studies – outlined at a meeting of the European Society for the study of Human Evolution earlier this year – have shown that this takeover by Homo sapiens was not straightforward. On several occasions, groups of early settlers perished as they moved into the continent.

In one study, international researchers re-examined a partial skull and skeleton of a woman found in the Zlatý Kůň cave in the Czech Republic. Originally thought to have been 15,000 years old, this new analysis indicated it was probably at least 45,000 years old, making her one of the oldest members of Homo sapiens found in Europe. However, the study also found she shared no genetic continuity with modern Europeans.



Farmed Production of Some Fish - and Seaweed - is Soaring

Farmed salmon -- like the ones grown in pens here in the Australian island state of Tasmania -- are easier to grow than some other fish species. Gregory PLESSE / AFP/File
Farmed salmon -- like the ones grown in pens here in the Australian island state of Tasmania -- are easier to grow than some other fish species. Gregory PLESSE / AFP/File
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Farmed Production of Some Fish - and Seaweed - is Soaring

Farmed salmon -- like the ones grown in pens here in the Australian island state of Tasmania -- are easier to grow than some other fish species. Gregory PLESSE / AFP/File
Farmed salmon -- like the ones grown in pens here in the Australian island state of Tasmania -- are easier to grow than some other fish species. Gregory PLESSE / AFP/File

The amount of farmed seafood we consume -- as opposed to that taken wild from our waters -- is soaring every year, making aquaculture an ever-more important source for many diets, and a response to overfishing.

According to the UN's Food and Agriculture Organization, nearly 99 million tons of aquatic animals (fish, molluscs like oysters and mussels and crustaceans like prawns) were farmed around the world in 2023, five times more than three decades ago.

Since 2022, the farming of aquatic animals has been steadily overtaking fishing around the world -- but with large disparities from species to species.

Fast-growing species

The two biggest sellers on the market in 2023, carp and tilapia, mainly came from freshwater farming, while other widely-consumed fish, like herring, came just from deep sea fishing

Thierry Laugier, a researcher at Ifremer, France's national institute for ocean science and technology, told AFP that fish farmers choose species that grow quickly and with simple requirements, to be able to control the life cycle.

Sales of the most widely farmed fish in Europe, Atlantic salmon, came to 1.9 million tons in 2023, 99 percent of which were farmed.

"We know how to control the ageing or how to launch a reproduction cycle, through injecting hormones," Laugier said.

Asia main producer
Asia is by far the biggest producer of farmed fish, accounting for 92 percent of the 136 million tons -- of both animal and plant species -- produced under manmade conditions in 2023.

"For carp, it comes down to tradition, it has been farmed for thousands of years on the Asian continent," the Ifremer researcher said.

At the other end of the spectrum, sardines and herring are just fished in the oceans, mainly for profitability reasons as some fish grow very slowly.

"It takes around two years to get an adult-sized sardine," Laugier said.

He said farming of some fish has not yet been started as, "for a long time, we thought the ocean was an inexhaustible resource".

Seaweed

Little known in the West, seaweed nevertheless accounts for almost a third of world aquaculture production.

Almost exclusively from Asia, seaweed production increased by nearly 200 percent in two decades, to 38 million tons. It is mainly used in industry, in jellies, pharmaceuticals and cosmetics, the expert said.

He said seaweed also has the major advantage of absorbing not just CO2 in the oceans, but also nitrogen and certain pollutants.

"And from an ecological point of view it is better to farm macroalgae than salmon," Laugier said.