The Rongorongo tablets are a set of wooden boards from Easter Island, covered with glyph-like symbols. Their meaning has not been deciphered, and little is known about how they were used.

Authentic rongorongo texts are written in alternating directions, a system called reverse boustrophedon. In a third of the tablets, the lines of text are inscribed in shallow fluting carved into the wood. The glyphs themselves are outlines of human, animal, plant, artifact and geometric forms. Many of the human and animal figures, have characteristic protuberances on each side of the head, possibly representing eyes.
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The Nazca Lines are large geoglyphs located in the desert of southern Peru. They were created by removing surface stones to form giant designs, including animals and shapes. Their purpose is still debated by researchers.
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Édouard-Léon Scott de Martinville invented the phonautograph in 1857. It recorded sound as visual wave patterns but could not play audio. In 2008, researchers converted an 1860 recording of the French song “Au Clair de la Lune” into sound. It is the earliest known recording of a human voice.
Listen to it in the connected post under this one.
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The first recording is how it was perceived at first, after they discovered it was the longer version that is correct.
The full original songtext:

Au clair de la lune,
Mon ami Pierrot,
Prête-moi ta plume
Pour écrire un mot.
Ma chandelle est morte,
Je n’ai plus de feu,
Ouvre-moi ta porte,
Pour l’amour de Dieu.

Au clair de la lune,
Pierrot répondit :
« Je n’ai pas de plume,
Je suis dans mon lit. »
Va chez la voisine,
Je crois qu’elle y est,
Car dans sa cuisine
On bat le briquet.

Translation to English:

By moonlight,
My friend Pierrot,
Lend me your pen
To write a word.
My candle is out,
I have no fire left,
Open your door for me,
For the love of God.

By moonlight,
Pierrot replied:
“I have no pen,
I am in my bed.
Go to the neighbor,
I think she is there,
Because in her kitchen
They are lighting a fire.”

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Our apologies for the delay,
Here is the second version.
This version is said to be more accurate. They sped it up and changed the voice to what you can hear here.

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Human blood is always red. Oxygen-rich blood is bright red, and oxygen-poor blood is darker red. Veins appear blue because skin and tissue affect how light is absorbed and scattered, not because blood is blue. The idea that blood is blue in the body is a myth.
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Lieutenant-General Henry Scrope Shrapnel (3 June 1761 – 13 March 1842) was a British Army officer who served in the French Revolutionary and Napoleonic Wars. He invented the shrapnel shell, which was named after him.
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In June 1962, three prisoners escaped from the infamous Alcatraz prison in San Francisco. Frank Morris and brothers John and Clarence Anglin spent months digging through the walls of their cells using improvised tools. They left behind realistic dummy heads made from soap, paper, and real hair to fool the guards. The men disappeared after escaping the island on a homemade raft. Despite extensive searches, they were never found, and their fate remains officially unknown.
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The world's oldest known non-colonial animal was a 507-year-old ocean quahog clam nicknamed Ming. Born in 1499, the clam was dredged off the coast of Iceland in 2006 by researchers who unknowingly ended its life by freezing it and opening its shell to count the internal growth rings to verify its age.🦪🥟🐚

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Scientists are developing artificial spider silk made from engineered proteins produced in lab systems. These proteins are spun into fibers that form strong, flexible materials similar to natural spider silk. The materials can be shaped into bandage-like dressings and combined with antibiotics or antimicrobial agents to help reduce bacteria and support wound healing.
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International Joke Day is celebrated every year on the 1st of July to encourage people to share laughter and brighten someone's day. While its exact origin is unclear, the day has been observed in many countries as a lighthearted occasion to tell jokes and enjoy humor with friends, family, and coworkers. Studies have shown that laughter can reduce stress, improve mood, and strengthen social connections. 😄🎭

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Wombats produce cube-shaped droppings. Scientists discovered that the unusual shape is created by variations in the elasticity of the wombat's intestines as the waste dries and moves through the digestive tract. The cubes help prevent the droppings from rolling away, which is useful because wombats use them to mark territory on rocks, logs, and other elevated surfaces. They are the only known animals that naturally produce cube-shaped feces.
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Magnolias are an ancient group of flowering plants, scientists say that they evolved over 100 million years ago and were pollinated by beetles before bees became common. Their flowers have tepals instead of separate petals and sepals. After flowering, they produce cone-like fruits with bright red seeds that birds spread, they don't digest the seeds.
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Andorra has no official army, relying on treaties with Spain and France for defense. It has a small volunteer group for ceremonies. Over 57% of citizens say they would fight if needed, up from 40.9% in 2006. Historically, able-bodied men could be called to defend the country through the “Sometent.” Only one shotgun per household is allowed; rifles and handguns need licenses. 🇦🇩

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The Moon takes about 29.5 Earth days to go from one sunrise to the next. Daylight lasts around 14.75 days, and night also lasts about 14.75 days. This long day and night happen because the Moon spins slowly and moves around Earth at the same time. We always see the same side of the Moon because of this. 🌕🌑
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The first hard disk drive to reach the 1-gigabyte (GB) capacity weighed approximately 227-250 kgs (500 - 550 pounds) for the main unit. This device, the IBM 3380 direct access storage device, was announced by IBM in 1980. It was roughly the size of a refrigerator and carried a price tag of approximately $40,000.

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