Questões de Concurso

New Research Sheds Light to The Persian Plateau: A Crucial Hub for Homo Sapiens Post-Africa Migration

March 31, 2024

The Persian plateau, a region that spans modern-day Iran, has been identified as a critical hub for Homo sapiens following their migration out of Africa. This pivotal role was established through the integration of genetic evidence, paleoecological models, and archaeological findings. The research, led by a team of scientists from various institutions, indicates that Homo sapiens dispersed from Africa approximately 70?60 thousand years ago (kya), but it wasn't until around 45 kya that they began to colonize all of Eurasia extensively. The interim period, which saw these early humans settle in the Persian plateau, has been a subject of considerable scientific interest.

The Genetic Evidence

Genetic studies reveal that populations within the Persian Plateau possess ancestry components closely matching those of the earliest Homo sapiens who left Africa. This suggests that the plateau acted as a significant waypoint for our species during their early Eurasian colonization attempts. The genetic markers found in the region provide a direct link to these ancient travelers, shedding light on the movements and expansions of early human populations.

Paleoecological Insights

The research further explores the environmental conditions that made the Persian plateau a suitable habitation site for early Homo sapiens. Using paleoecological models, the team reconstructed the climatic conditions of the plateau between 70 and 30 kya. The models indicate that the region could support human life throughout this period, offering a stable environment for these communities. Moreover, the plateau's ecological diversity and resources could sustain larger populations compared to other West Asian regions, making it an ideal settlement area during this epoch.

Archaeological Corroboration

Archaeological evidence from the Persian Plate supports the genetic and paleoecological findings. Sites across the region have yielded artifacts and remains dating back to the relevant period, indicating a continuous human presence. These archaeological sites, alongside the genetic and environmental data, paint a comprehensive picture of the plateau as a bustling hub for early humans.

The combination of genetic, paleoecological, and archaeological evidence positions the Persian plateau as a critical juncture in the story of human migration and settlement. This research not only highlights the importance of the region in our prehistoric past but also opens new avenues for understanding the complex journey of Homo sapiens as they spread across the globe. Further investigations into this area are likely to yield even more insights into the early chapters of human history.

https://www.thearchaeologist.org/blog/new-research-sheds-light-to-the persian-plateau-a-crucial-hub-for-homo-sapiens-post-africa-migration

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Social media, magazines and shop windows bombard people daily with things to buy, and British consumers are buying more clothes and shoes than ever before. Online shopping means it is easy for customers to buy without thinking, while major brands offer such cheap clothes that they can be treated like disposable items – worn two or three times and then thrown away

In Britain, the average person spends more than £1,000 on new clothes a year, which is around four per cent of their income. That might not sound like much, but that figure hides two far more worrying trends for society and for the environment. First, a lot of that consumer spending is via credit cards. British people currently owe approximately £670 per adult to credit card companies. That’s 66 per cent of the average wardrobe budget. Also, not only are people spending money they don’t have, they’re using it to buy things they don’t need. Britain throws away 300,000 tons of clothing a year, most of which goes into landfill sites.

People might not realize they are part of the disposable clothing problem because they donate their unwanted clothes to charities. But charity shops can’t sell all those unwanted clothes. Fast fashion goes out of fashion as quickly as it came in and is often too poor quality to recycle; people don’t want to buy it second-hand. Huge quantities end up being thrown away, and a lot of clothes that charities can’t sell are sent abroad, causing even more economic and environmental problems.

However, a different trend is springing up in opposition to consumerism – the ‘buy nothing’ trend. The idea originated in Canada in the early 1990s and then moved to the US, where it became a rejection of the overspending and overconsumption of Black Friday and Cyber Monday during Thanksgiving weekend. On Buy Nothing Day people organize various types of protests and cut up their credit cards. Throughout the year, Buy Nothing groups organize the exchange and repair of items they already own.

The trend has now reached influencers on social media who usually share posts of clothing and make- -up that they recommend for people to buy. Some YouTube stars now encourage their viewers not to buy anything at all for periods as long as a year. Two friends in Canada spent a year working towards buying only food. For the first three months they learned how to live without buying electrical goods, clothes or things for the house. For the next stage, they gave up services, for example haircuts, eating out at restaurants or buying petrol for their cars. In one year, they’d saved $55,000. 

The changes they made meant two fewer cars on the roads, a reduction in plastic and paper packaging and a positive impact on the environment from all the energy saved. If everyone followed a similar plan, the results would be impressive. But even if you can’t manage a full year without going shopping, you can participate in the anti-consumerist movement by refusing to buy things you don’t need. Buy Nothing groups send a clear message to companies that people are no longer willing to accept the environmental and human cost of overconsumption.

source: learnenglish.britishcouncil.org