Written by the TreasureGuide for the exclusive use of the Treasure Beaches Report.
For eons, humans have worn personal ornaments that tether them to their people; precious items that reflect a clan identity through life and into the grave. But those cultural associations don't always follow family lines.
A new study comparing thousands of pendants from across ice age Europe, dating to between 34,000 and 24,000 years ago, suggests there were at least nine distinct cultural groups of hunter-gatherers within the broader population referred to as the Gravettians, each with their own relatively distinct styles of ornament.
Additional analyses of genetic data from burial sites reveal that some of these categories shared the same cultural embellishments even though they were of different ancestries.
"We've shown that you can have two [distinct] genetic groups of people who actually share a culture," ...
Here is that link.‘Landmark paper’ shows why ice age Europeans wore jewelry | Science | AAAS
While I'm not impressed sp far by the conclusions of this study, the creation of such a large database of artifacts will probably lead to much more analysis and impressive results. Unfortunately I could find the original study to read. - only a journal that required payment to join.
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Here is another study that gathered a lot of information. This time from ship logs.
In the 19th and early 20th centuries, millions of weather observations were carefully made in the logbooks of ships sailing through largely uncharted waters. Written in pen and ink, the logs recorded barometric pressure, air temperature, ice conditions and other variables. Today, volunteers from a project called Old Weather are transcribing these observations, which are fed into a huge dataset at the National Oceanic and Atmospheric Administration. This "weather time machine," as NOAA puts it, can estimate what the weather was for every day back to 1836, improving our understanding of extreme weather events and the impacts of climate change...
Here is the link for more about that.
How old ship logs are giving new insights into climate change (reuters.com)
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The ancient Romans were masters of building and engineering, perhaps most famously represented by the aqueducts. And those still functional marvels rely on a unique construction material: pozzolanic concrete, a spectacularly durable concrete that gave Roman structures their incredible strength.Even today, one of their structures – the Pantheon, still intact and nearly 2,000 years old – holds the record for the world's largest dome of unreinforced concrete.
The properties of this concrete have generally been attributed to its ingredients: pozzolana, a mix of volcanic ash – named after the Italian city of Pozzuoli, where a significant deposit of it can be found – and lime. When mixed with water, the two materials can react to produce strong concrete.
But that, as it turns out, is not the whole story...
Here is that link if you are interested why the Roman's concrete was so good.
We Finally Know How Ancient Roman Concrete Was Able to Last Thousands of Years (msn.com)
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I haven't done any videos for quite a while, but my channel is still there and there are some videos that you might want to see. There are several videos on how metal detector signals are different for different kinds of objects. There are a couple on how beaches erode and one of on how to quickly select silver Canadian coins from a large group of Canadian coins. A magnet was used to do that.
Here is the link for what there is of my video channel.
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Good hunting,
TreasureGuide@comcast.net