Diggin’ deeper

A 2,000-year-old computer? 10 archaeological finds that challenge history

Image: The Cleveland Museum of Art

Most of the time, archaeology uncovers little more than pottery shards and ancient tools—not that there’s anything wrong with those. But sometimes, when luck strikes, excavations can reveal bizarre, baffling, and downright eerie artifacts that challenge our understanding of history. Join us on a journey through 10 of the most fascinating mysteries and unexpected finds ever unearthed.

Image: Constantinos Kollias

Recovered from a shipwreck in 1901, the Antikythera Mechanism was a surprisingly complex artifact that used intricate bronze gears to predict eclipses, track planetary positions, and regulate calendars.

Advanced imaging techniques revealed it contained at least 37 interlocking gears, operated by a hand crank, earning it the title of the world’s first known analog computer.

Image: Seiji Seiji

Dating back to 500 BCE–500 CE, these lines cover over 400 square miles and depict animals, plants, and geometric shapes. Created by removing the top layer of reddish pebbles to expose the lighter soil beneath, they have remained intact thanks to the region’s dry climate.

While their full extent can only be appreciated from the air, scholars believe they served astronomical or ceremonial purposes at the time.

Image: Spencer Davis

Found across Europe, these hollow 12-sided polyhedra date to the 2nd–4th centuries CE. From the start, they puzzled scientists, who couldn’t determine their purpose.

Their size, ranging from 1.6 to 4.3 inches, and evenly spaced holes suggest they may have been measuring tools, religious artifacts, or even knitting aids. However, no ancient texts explain their use, and, so far, the mystery remains unsolved.

Image: F𝓪7𝓪𝓭 ✔️ .

This 2,000-year-old ceramic jar contained a copper cylinder and an iron rod, which some have speculated could have been part of an ancient galvanic cell.

It might have generated the electricity required for electroplating or medicinal purposes. Tests with modern replicas show it can produce a small voltage, though its true function remains unconfirmed.

Image: The New York Public Library

Drawn by Ottoman admiral Piri Reis in 1513, this early world map depicts parts of Europe, Africa, and the Americas with surprising precision.

Some theories claim it even shows Antarctica centuries before its official discovery. The surviving fragment is now kept in Istanbul’s Topkapı Palace.

Image: Mark Rasmuson

Carbon-dated to the early 15th century, this mysterious 240-page manuscript is written in an unknown script with even stranger botanical drawings.

Despite decades of cryptographic attempts, no one has cracked its meaning. It’s housed at Yale University’s Beinecke Library.

Image: Steinar Engeland

At the northernmost tip of the island of Newfoundland, Canada, lies the first confirmed Viking settlement in North America, dated to around 1000 CE. Excavations have revealed turf houses, iron-working remains, and Viking-style artifacts.

This UNESCO World Heritage site provides clear evidence that Norse explorers reached North America nearly 500 years before Columbus.

Image: Aaron Greenwood

Discovered in 1974, China’s Terracotta Warriors consist of over 8,000 life-sized clay soldiers standing in battle formation near Emperor Qin Shi Huang’s tomb.

Buried with the emperor around 210 BCE, these warriors were created to serve as his protectors in the afterlife, reflecting the emperor’s power and beliefs about immortality. The site remains one of the most significant archaeological discoveries in history.

Image: Gabriel Garcia Marengo

Discovered in the Alps in 1991, Ötzi is a naturally mummified man from the Copper Age, over 5,300 years old. Found with a copper axe and clothing made from multiple animal hides, his body is so perfectly preserved that even multiple tattoos can be identified.

Curiously, analysis of Ötzi’s remains revealed he died from an arrow wound, offering rare and valuable insight into prehistoric life, violence, and death during the Copper Age. A literal cold case from millennia ago, eh?

Image: Matteo Vistocco

Discovered in 1799, the Rosetta Stone is a granodiorite stele inscribed with the same text in three scripts: Greek, Demotic, and hieroglyphic. This unique trilingual inscription provided the crucial key to understanding ancient Egyptian hieroglyphs.

Thanks to the Rosetta Stone, Jean-François Champollion was able to crack the hieroglyphic code in 1822, unlocking centuries of Egyptian history. The artifact is now prominently displayed in the British Museum.

Blame evolution: 10 reasons why cats are (not) the worst pets

Cats often get a reputation for being difficult, distant, or unreliable pets. People who grew up with dogs sometimes describe them as cold, stubborn, or uninterested in pleasing anyone. This list looks at familiar cat behaviors that can feel frustrating at first, especially to new owners. Seen more closely, these same traits help explain why cats fit comfortably into many homes and why millions of people continue to choose them as companions year after year. Continue reading to discover that your cat truly loves you!

Calling a cat by name and getting no response is a common experience. Unlike dogs, cats rarely come running just because they are called. This can feel dismissive, even rude, to owners who expect a pet to respond on cue.

What’s often overlooked is that cats evolved as mostly solitary hunters. They did not develop social behaviors centered on following leaders or responding to group signals. Studies and everyday observation show that cats can recognize their names and the sound of their owner’s voice, but they decide for themselves whether to react or not. For many people, this independence means fewer demands for constant interaction and a pet that is comfortable spending time on its own.

Many cat owners know the sound: a slow tap, a pause, and then a cup or pen sliding off the edge of a table. Cats often push objects while watching closely, as if waiting for the result.

This behavior is tied to curiosity and learning. Cats use their paws to test how objects move, whether they roll, wobble, or fall. This kind of testing is connected to hunting instincts, where judging motion and distance matters. While it can be annoying, it also shows that cats stay mentally engaged with their environment instead of simply reacting to commands or routines.

Some cats appear deeply committed to a favorite chair, window, or room, while paying less attention to following their owners around the house. This can be mistaken for emotional distance.

In reality, cats rely heavily on familiar spaces. Territorial behavior is well documented in feline behavior, and known areas provide safety and predictability. Many cats show affection by choosing to remain near trusted people within these familiar spots. Staying close without constant contact is often how cats express comfort and attachment. It looks like indifference. It usually isn’t.

Cats can learn routines, such as using a litter box or recognizing feeding times, but they rarely perform tricks or tasks simply to please people. Compared to dogs, they are often labeled "untrainable." Domestication helps explain this difference. Cats were domesticated much later than dogs and retained more independent behavior. Dogs were bred over thousands of years for cooperation with humans, while cats largely adapted themselves to human environments. For many owners, this means living with an animal whose behavior feels consistent and self-directed, rather than shaped by constant training.

Adult cats sleep a lot—often 12 to 16 hours a day. This pattern comes from their natural rhythm as predators that conserve energy between short periods of activity. Instead of constant attention-seeking, cats rest when nothing demands their focus. For many households, this makes cats easier to live with, especially for people who value quiet or spend part of the day away from home.

Cats frequently refuse foods that dogs would eat without hesitation. They are obligate carnivores, meaning their bodies are designed to rely on nutrients found primarily in meat. They require specific amino acids that plant-based foods do not provide. Their selectiveness reflects a digestive system shaped by evolution, not stubbornness. Once owners understand this, feeding routines often become simpler and more predictable.

Every new couch seems to be noticed immediately. Scratching furniture is one of the most common complaints about cats: sofas, chairs, and rugs often suffer. Scratching serves several purposes. It helps cats stretch muscles, maintain claw health, and mark territory using scent glands in their paws. While scratching can damage household items, the behavior itself supports physical comfort and well-being. Providing appropriate scratching surfaces allows cats to meet this need without constant correction.

Some cats nip during play or petting, especially when stimulation becomes too intense. It feels personal, but it rarely is. In many cases, cats show subtle warning signs first, such as tail flicking, ear movement, or muscle tension. Overstimulation, particularly around sensitive areas like the tail or lower back, triggers these reactions. Owners who learn to read these signals often find that cats communicate boundaries clearly and consistently.

Cats are often active early in the morning or late at night, which can interrupt your sleep. This crepuscular pattern comes from hunting instincts, as small prey animals are active at those times. Even indoor cats retain this rhythm. While it doesn’t always align with human sleep schedules, it also means cats can go about life without constant attention during the day, when many households are busiest.

Cats may ignore attention for long periods and then suddenly want closeness. This shift can feel confusing or inconsistent. They usually approach people when they feel calm and secure. Affection offered on their terms often feels different—and more noticeable—than affection given on demand. For many owners, these moments feel meaningful precisely because they happen by the cat’s choice rather than by routine or training.