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Capsule of the Day

DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byhistoryClear all

Results

Showing 121 to 140 of 172

NewestMost votedA to Z
history
Fact· Historical

The Berlin Wall

The Berlin Wall was a heavily guarded barrier that divided the city of Berlin from 1961 to 1989, separating communist East Germany from democratic…

byCapsule
0 votes0 reviews
history
Fact· Historical

The Great Sphinx of Giza

The Great Sphinx of Giza is a colossal ancient statue in Egypt, with the body of a lion and the head of a human. Carved from a single mass of…

byCapsule0 votes0 reviews
astronomy
Fact· Historical

The Telescope

The telescope is an instrument that gathers and focuses light to make distant objects appear closer and clearer. Its invention transformed astronomy,…

byCapsule0 votes0 reviews
agriculture
Fact· Historical

Chocolate

Chocolate is a food made from the seeds of the cacao tree, enjoyed around the world in countless forms. From a sacred drink of ancient Mesoamerica to…

byCapsule0 votes0 reviews
history
Fact· Historical

The Aztec Empire

The Aztec Empire was a powerful state that dominated central Mexico in the fifteenth and early sixteenth centuries, until it was conquered by Spanish…

byCapsule0 votes0 reviews
history
Fact· Historical

The Silk Road

The Silk Road was a vast network of trade routes that connected China with Central Asia, the Middle East, and Europe for many centuries. More than a…

byCapsule0 votes0 reviews
history
Debunked

Astrology

Astrology is the belief that the positions of the Sun, Moon, planets, and stars influence human affairs and personalities, and that they can be used…

byCapsule0 votes0 reviews
history
Debunked

Alchemy

Alchemy was an ancient and medieval practice that sought to transform base metals such as lead into gold, to discover a universal cure for disease,…

byCapsule0 votes0 reviews
earth science
Contested

What Killed the Dinosaurs

Around sixty six million years ago, the dinosaurs and many other forms of life suddenly vanished in one of the great mass extinctions in Earth's…

byCapsule0 votes0 reviews
history
Fact· Historical

The Violin

The violin is a wooden string instrument played with a bow, the highest pitched member of the violin family. Prized for its expressive, singing tone,…

byCapsule0 votes0 reviews
history
Fact· Historical

Chess

Chess is a two player strategy game played on a board of sixty four squares with sixteen pieces per side. One of the oldest and most popular games in…

byCapsule0 votes0 reviews
history
Fact· Historical

The Olympic Games

The Olympic Games are the world's foremost international sporting event, bringing together thousands of athletes from nearly every nation to compete…

byCapsule0 votes0 reviews
agriculture
Fact· Historical

Coffee

Coffee is a brewed drink made from the roasted seeds of the coffee plant, and one of the most popular and widely traded beverages in the world.…

byCapsule0 votes0 reviews
history
Fact· Historical

Pompeii

Pompeii was a prosperous Roman city near modern Naples that was buried under volcanic ash when Mount Vesuvius erupted in 79 AD. Frozen in time by the…

byCapsule0 votes0 reviews
engineering
Fact· Historical

The Internet

The Internet is a global system of interconnected computer networks that lets billions of devices around the world communicate and share information.…

byCapsule0 votes0 reviews
history
Fact· Empirical

Statue of Liberty

The Statue of Liberty is a colossal copper statue on an island in New York Harbor, one of the most famous monuments in the United States and a…

byCapsule0 votes0 reviews
astronomy
Debunked

Flat Earth

The idea that the Earth is flat is a debunked belief that the planet is a disc or a plane rather than a sphere. It has been contradicted by…

byCapsule0 votes0 reviews
history
Fact· Historical

Ancient Egypt

Ancient Egypt was one of the world's earliest and longest lasting civilizations, flourishing for roughly three thousand years along the banks of the…

byCapsule0 votes0 reviews
medicine
Debunked

Miasma Theory

Miasma theory was the belief that diseases such as cholera and the plague were caused by "bad air," a poisonous vapor thought to rise from rotting…

byCapsule0 votes0 reviews
biography
Fact· Historical

Andrew Carnegie

Andrew Carnegie was a Scottish American industrialist who led the enormous expansion of the American steel industry in the late nineteenth century…

byCapsule0 votes0 reviews
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