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Today I Learned @lemmy.world

TIL that Hachikō, an Akita dog in Japan, waited at Shibuya Station every day for 9 years after his owner died, eventually becoming a national symbol of loyalty.

Today I Learned @lemmy.world

TIL Roselle, a guide dog, led her blind owner down 78 floors of the World Trade Center on 9/11, calmly navigating smoke and chaos to save his life.

Today I Learned @lemmy.world

TIL the plastic wall plug, used in homes and construction worldwide, was invented by German engineer Artur Fischer in 1958. His simple nylon dowel forever changed how we hang, fix, and build.

Today I Learned @lemmy.world

TIL the toxic fungus blamed for the "curse" of King Tut’s tomb may actually help fight leukemia, with researchers extracting cancer-killing compounds from it.

Today I Learned @lemmy.world

TIL some pigeons have legs that resemble chickens because of shared mutations that alter limb identity, causing feathers to grow where scales usually form.

Today I Learned @lemmy.world

TIL ancient Persians built desert freezers called 'Yakhchals' around 400 BC that kept ice frozen year-round using evaporative cooling and smart architecture.

Today I Learned @lemmy.world

TIL the Gold Mask of Agamemnon is not actually Agamemnon’s. This golden death mask from Mycenae was misattributed by its discoverer, but it remains one of the most famous artifacts from ancient Greece

Today I Learned @lemmy.world

TIL that in 1799, a French soldier discovered the Rosetta Stone, whose Greek, Demotic, and hieroglyphic texts made ancient Egypt readable again.

Today I Learned @lemmy.world

TIL Leonardo da Vinci designed flying machines, armored tanks, and a robot in the 15th century—centuries before their time. His notebooks reveal ideas far ahead of the world he lived in.

Today I Learned @lemmy.world

TIL the queen was once the weakest piece in chess until the 15th century, when her powers expanded during a time of rising female monarchs in Europe — changing the game’s pace forever.

Today I Learned @lemmy.world

TIL the Roman Colosseum could be flooded to host full-scale naval battles. Using aqueduct-fed channels, it transformed into a lake where warships reenacted sea battles.

Mildly Interesting @lemmy.world

The Racetrack Playa in Death Valley features mysterious rocks that move on their own across the desert floor, leaving long trails behind—no human or animal involved.

Today I Learned @lemmy.world

TIL about the Assassin’s Teapot, an ancient Chinese vessel engineered to pour two different liquids from one spout without mixing. It used hidden chambers and clever physics to fool observers—original

Today I Learned @lemmy.world

TIL ancient Greeks built the Antikythera Mechanism, a gear-driven machine that could calculate solar and lunar cycles, proving advanced scientific knowledge existed long before the modern era.

Today I Learned @lemmy.world

TIL that Korea's Hwacha, an early rocket launcher from the 15th century, could devastate enemy troops with a single volley of 200 flaming arrows.

Today I Learned @lemmy.world

TIL Ancient Persians built Yakhchāls, innovative ice storage structures dating back to 400 BC. These dome-shaped coolers used evaporative cooling to keep ice frozen even during hot summers.

Today I Learned @lemmy.world

TIL insects like mosquitoes can fly in the rain because their lightweight bodies don't break raindrops; instead, they ride them safely to the ground.

Today I Learned @lemmy.world

TIL ancient Romans used communal toilets—stone benches with keyhole-shaped holes—where people sat side by side without privacy, chatting while waste drained beneath them using flowing water.

Today I Learned @lemmy.world

TIL X-rays were accidentally discovered in 1895 during an experiment with cathode rays

Today I Learned @lemmy.world

TIL how ancient Egyptians made mummies using a detailed mummification process to preserve bodies for the afterlife.