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University of Cincinnati, Pylos Excavations

Archaeologists Discover 1400 Artifacts In Bronze Age Warrior’s Tomb

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University of Cincinnati, Pylos Excavations

Archaeologists in southern Greece have uncovered the tomb of a wealthy Bronze Age warrior dating back to around 1500 BCE. The tomb includes not only the warrior’s skeleton, but also 1400 artifacts ranging from bronze swords and daggers to gold jewelry and precious stone beads. The University of Cincinnati-led archaeological team is calling it one of the biggest finds in mainland Greece in 65 years. 

The dig began inauspiciously: the team, who had been excavating the area around the Palace of Nestor at Pylos, chose to survey a nearby field, and soon found a few deliberately-placed stones.

“At first, we expected to find the remains of a house,” University of Cincinnati researcher Jack L. Davis told UC Magazine. “We expected that this was the corner of a room of a house, but quickly realized that it was the tops of the walls of a stone-lined grave shaft.”

Further excavation of the tomb, which measures around five feet deep, revealed an amazing sight:

On the floor of the grave lay the skeleton of an adult male, stretched out on his back. Weapons lay to his left, and jewelry to his right.

Near the head and chest was a bronze sword, its ivory hilt covered in gold. A gold-hilted dagger lay beneath it. Still more weapons were found by the man’s legs and feet.

Gold cups rested on his chest and stomach, and near his neck was a perfectly preserved gold necklace with two pendants. By his right side and spread around his head were over one thousand beads of carnelian, amethyst, jasper, agate and gold. Nearby were four gold rings, and silver cups as well as bronze bowls, cups, jugs and basins.

According to The New York Times, the researchers are calling the ancient man the “griffin warrior,” after an ivory plaque carved with a griffin found beside him in the tomb. Based on the precious metals and beads also found in the grave, they believe he was a leader in his community, and of course, extremely wealthy. As Davis explained to UC Magazine, “Whoever he was, he seems to have been celebrated for his trading or fighting [on] the nearby island of Crete and for his appreciation of the more-sophisticated and delicate [art] of the Minoan civilization (found on Crete), with which he was buried.”

Researchers believe the tomb may help shed light on the emergence of Mycenaean civilization and the roots of classic Greek culture, which arose in that area several centuries later. Though the tomb pre-dates the Palace of Nestor (which was, itself, destroyed in 1180 BC, around the time of Homer’s Troy) by 200 or 300 years, it provides valuable clues about the emergence of culture and trade in that region. Together with other recent finds, like the Mycenaean palace near Sparta, the researchers believe they can start to piece together a more complete picture of the origins of Mycenaean civilization, which was the first advanced civilization to emerge on the European mainland.

The team is still in shock, not only that they found the tomb, but that it had lain undisturbed for so many centuries. So many ancient tombs have been rooted out and looted over the years—and this one, with the top of its stone wall standing in the field, was lying almost in plain sight. “It is indeed mind boggling that we were first,” Dr. Davis told The New York Times. “I’m still shaking my head in disbelief. So many walked over it so many times, including our own team.”

Bronze Mirror With Ivory Handle (Credit: University of Cincinnati, Pylos Excavations)

UC's Sharon Stocker with the 3,500 year-old skull (Credit: University of Cincinnati, Pylos Excavations)

Bronze weapons(Credit: University of Cincinnati, Pylos Excavations)

[h/t: UC Magazine]

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iStock // Ekaterina Minaeva
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technology
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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iStock
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Health
One Bite From This Tick Can Make You Allergic to Meat
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iStock

We like to believe that there’s no such thing as a bad organism, that every creature must have its place in the world. But ticks are really making that difficult. As if Lyme disease wasn't bad enough, scientists say some ticks carry a pathogen that causes a sudden and dangerous allergy to meat. Yes, meat.

The Lone Star tick (Amblyomma americanum) mostly looks like your average tick, with a tiny head and a big fat behind, except the adult female has a Texas-shaped spot on its back—thus the name.

Unlike other American ticks, the Lone Star feeds on humans at every stage of its life cycle. Even the larvae want our blood. You can’t get Lyme disease from the Lone Star tick, but you can get something even more mysterious: the inability to safely consume a bacon cheeseburger.

"The weird thing about [this reaction] is it can occur within three to 10 or 12 hours, so patients have no idea what prompted their allergic reactions," allergist Ronald Saff, of the Florida State University College of Medicine, told Business Insider.

What prompted them was STARI, or southern tick-associated rash illness. People with STARI may develop a circular rash like the one commonly seen in Lyme disease. They may feel achy, fatigued, and fevered. And their next meal could make them very, very sick.

Saff now sees at least one patient per week with STARI and a sensitivity to galactose-alpha-1, 3-galactose—more commonly known as alpha-gal—a sugar molecule found in mammal tissue like pork, beef, and lamb. Several hours after eating, patients’ immune systems overreact to alpha-gal, with symptoms ranging from an itchy rash to throat swelling.

Even worse, the more times a person is bitten, the more likely it becomes that they will develop this dangerous allergy.

The tick’s range currently covers the southern, eastern, and south-central U.S., but even that is changing. "We expect with warming temperatures, the tick is going to slowly make its way northward and westward and cause more problems than they're already causing," Saff said. We've already seen that occur with the deer ticks that cause Lyme disease, and 2017 is projected to be an especially bad year.

There’s so much we don’t understand about alpha-gal sensitivity. Scientists don’t know why it happens, how to treat it, or if it's permanent. All they can do is advise us to be vigilant and follow basic tick-avoidance practices.

[h/t Business Insider]

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