See how Stonehenge was built

Stonehenge has produced wild origin stories

Built before the wheel was invented, Stonehenge inspired increasingly fantastical explanations—from a 12th-century tale of Merlin and Nephilim giants to 1960s claims that aliens built it alongside the pyramids.

Scientific advances have transformed understanding of Stonehenge’s builders

Techniques such as radiocarbon dating, DNA analysis, and isotopic testing have revised scholars' understanding of Stonehenge. This article presents evidence suggesting that societies were more cooperative and less violent than earlier theories had suggested.

What Stonehenge sounded like

Researchers built the first scale model of the world's best-known prehistoric stone circle, Stonehenge, to study its acoustic properties. Built approximately 5,000 years ago, the landmark in southern England has puzzled historians for centuries, but...

Researchers once thought Stonehenge functioned as a precise astronomical computer

In the 1960s, scientists used early computers to analyze the stone layout at Stonehenge, arguing it could predict eclipses and other celestial events. This BBC Sky at Night Magazine piece explains how the theory arose—and why scholars now doubt it.

Stonehenge was part of a much larger prehistoric landscape

Long before Stonehenge was built, the Salisbury Plain was already dotted with ceremonial sites, burial mounds, and large-scale earthworks. These landscape maps reveal a densely inhabited region shaped by sophisticated prehistoric communities with ambitious public projects.

Fascinating 3D animation shows how Romans built roads

Highly efficient engineering and materials production allowed Roman administrators to lay down nearly 50,000 miles of roads across the ancient empire. These roads were built so effectively that many are still around today. Watch this quick 3-minute video to see how they did it.

Explore Stonehenge up close with photos and a 3D model

This Google Arts & Culture gallery brings Stonehenge into sharp focus through Life magazine archives, Getty Images, and a rotatable Google Earth model—plus a virtual tour that is close enough to spot lichen on the 30-foot sarsen stones.

Scientists are still confused how Machu Picchu was built

Machu Picchu, the 15th-century Inca city high in the Andes, continues to fascinate experts with its mysteries. The methods used to transport and carve its massive stones—some weighing 15 tons—remain unclear. Theories range from hundreds of men dragging the stones to innovative techniques like using expanding wet wooden wedges for precision carving.

An artist recreated Stonehenge as a bounce house in 2012

Though Stonehenge is sacred to many modern druids and pagans, artist Jeremy Deller reimagined it as a giant inflatable bouncy house—touring Paris, London’s 2012 Olympics, and even Stonehenge itself.

The ancient engineers inspiring modern building practices

Modern concrete structures need replacing every 50 to 100 years, so why are buildings by the Maya, ancient Rome, and ancient China still standing strong? This article details how scientists are looking into humanity's past for clues on how to craft long-lasting structures. Part of the problem is adopting old material recipes to hold up to modern demands.

How old are stone tools?

The earliest evidence for stone tools currently dates back to 3.3 million years ago, long before modern humans started roaming about. These tools were made by stone flaking, a mode of tool creation that still is used today and is done by striking...

Watch the history of human migration that led to civilizations

Starting in Africa where they hunted with spears and fires, humans would gradually move out of the continent over thousands of years as they navigated crossing deserts, rivers, uneven terrain, and shifting climates. Development of technology, language, farming, and other societal structures helped build up the first civilizations.

The Greeks weightlifted using massive stones—but viewed muscles differently

Ancient Greek art is replete with humans with muscular physiques, but there is very little evidence they knew much about proper weightlifting. There are just a few stones with inscriptions hinting at their weightlifting use. This article exposes some of our modern assumptions about muscle development, suggesting the Greeks thought differently about strength than we do today.

How humans are engineering the planet

One fact about our time is becoming increasingly well-known. No matter how far you travel, no matter in which direction you point, there is nowhere on Earth that remains free from the traces of human activity.

A fun, illustrated history of the Jurassic Coast

The 95-mile stretch of coastline along England's southern shores known as the Jurassic Coast is unique in the world due to its clear demonstration of 185 million years of geological history. Now, you can see the story of that formation told in a whimsical, absorbing video created by artist Tim Britton and his pen.

How to carry more than your own bodyweight

Those images showing a villager carrying an enormous bundle on their back, or balancing a basket of fish on their head—how's that possible? This article dives into the clever tools and habits of strength training some cultures employ as part of their labors, from the springy bamboos used by Vietnamese farmers to the headbound burdens of Himalayan sherpas.

The magic angle to skip a spinning stone is 20 degrees

The traditional shoreside activity—reputedly practiced by luminaries Shakespeare and Homer—can be broken down into its bare physics, from hydrodynamics and momentum to gravity.

Meet a 90-year-old who built his own hobbit-inspired house

A retired carpenter built himself a kind-of Hobbit house, and is living comfortably off the grid at 90 years old, tourists notwithstanding. Learn how he did it with this video.

Learn how the Earth was made

Four and a half billion years ago the Earth formed from dust in space to become a molten ball of rock orbiting the sun. Travel back in time to investigate how the Earth was made.

What techniques did cave painters use to create their work?

Cave paintings long predate local craft stores and premade paints, so what techniques and tools did cave artists use to create such long-lasting works? This video gallery details how ancient artists inscribed and painted their work on cave walls, specifically the Chauvet cave in France.

An exploration of what makes Olympic curling so difficult and strange

The sport is often maligned for its oddity, but this impassioned video argues it's one of the more impressive (and good-natured) sports in the Olympics. Sometimes labeled "chess on ice," curling at the Olympics uses 44-pound, 60-million-year-old granite stones all extracted from the same Scottish island.

Erie Canal builders invented the “stump puller” to clear forests

One ingenious device created for the Erie Canal was the stump puller—a horse-powered machine using levers and chains to rip tree stumps from the ground.

Why water towers are built that way

Watch a time-lapse of the installation of the New Safe Confinement structure

The world's largest movable metal structure was built to contain the radioactive material from the 1986 Chernobyl disaster, which had previously been confined within a structure built to last no more than 30 years. The new structure was slowly rolled along rails over the course of two weeks.

An illustrated guide to constructing a Viking ship

Using saga descriptions, museum consultations, and physical evidence, this guide tries to imagine what kind of ship Harald Hardrada would have sailed into Constantinople in 1034. The contemporary illustrations suggest technically precise craftsmanship.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Massive 3D printers have been used to build homes by stacking layers of 'concrete toothpaste,' a fire-resistant material that effectively insulates against outside noise.

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

The animatronic shark from Steven Spielberg's 'Jaws,' the first modern blockbuster, was a complex underwater apparatus called 'Bruce.'

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

Watch this video that uses Lego bricks to explain how venture capital works.

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

Explore the history, structure, and species of Australia's Great Barrier Reef with this interactive journey narrated by Sir David Attenborough.

Walt Disney's early film 'Alice's Wonderland' was a groundbreaking innovation in the silent film era

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

Meet the 56 signers of the Declaration of Independence—most of whom didn't put pen to paper until August 2, 1776—and see their original signatures.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.