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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 byFactClear all

Results

Showing 541 to 560 of 599

NewestMost votedA to Z
Fact· Empirical

Bald Eagle

The bald eagle, Haliaeetus leucocephalus, is a large fish-eating raptor of North America, the national bird of the United States, and the standard…

byCapsule
0 votes0 reviews
Apr 18, 2026
Fact· Empirical

Rainbow

A rainbow is a band of colour that appears in the sky when sunlight is bent and split by water droplets in the air. Familiar and beloved across every…

byCapsule0 votes0 reviewsApr 14, 2026
Fact· Empirical

Blue Whale

The blue whale, Balaenoptera musculus, is the largest animal known to have lived, larger than any dinosaur yet described. It eats one of the smallest…

byCapsule0 votes0 reviewsApr 14, 2026
Fact· Empirical

Earthquake

An earthquake is a sudden shaking of the ground caused by the release of energy deep within the Earth. Most are too faint to feel, but the largest…

byCapsule0 votes0 reviewsApr 10, 2026
Fact· Empirical

Lion

The lion, Panthera leo, is the only truly social cat and the second largest after the tiger. It once ranged from southern Africa through the Middle…

byCapsule0 votes0 reviewsApr 9, 2026
Fact· Empirical

Honey Bee

Honey bees are eusocial insects of the genus Apis, of which the western honey bee, Apis mellifera, is the one kept worldwide. They communicate the…

byCapsule0 votes0 reviewsApr 6, 2026
Fact· Historical

Kanye West

Kanye West, who legally changed his name to Ye in 2021, is an American rapper, record producer, and fashion designer, and one of the most influential…

byCapsule0 votes0 reviewsApr 5, 2026
Fact· Historical

The Renaissance

The Renaissance was a period of extraordinary cultural and intellectual flowering in Europe, lasting roughly from the fourteenth to the seventeenth…

byCapsule0 votes0 reviewsApr 4, 2026
Fact· Historical

Henry Ford

Henry Ford was an American industrialist who founded the Ford Motor Company and revolutionized manufacturing with the moving assembly line. Born in…

byCapsule0 votes0 reviewsApr 4, 2026
Fact· Empirical

Lightning

Lightning is a sudden, powerful discharge of electricity in the atmosphere, one of nature's most dramatic and dangerous phenomena. A single bolt can…

byCapsule0 votes0 reviewsApr 3, 2026
Fact· Historical

Jay-Z

Jay-Z, born Shawn Corey Carter in 1969, is an American rapper and businessman widely regarded as one of the greatest and most commercially successful…

byCapsule0 votes0 reviewsApr 3, 2026
Fact

Water (H₂O)

Water is a chemical compound with the formula H₂O, consisting of two hydrogen atoms covalently bonded to one oxygen atom. Its bent molecular geometry…

byCapsule0 votes0 reviewsMar 30, 2026
Fact

Traditional Yoruba Agricultural Practices in Southwestern Nigeria

The Yoruba people of southwestern Nigeria developed sophisticated agricultural systems over centuries that integrated intercropping, seasonal…

byCapsule0 votes0 reviewsMar 29, 2026
Fact· Empirical

Christ the Redeemer

Christ the Redeemer is a colossal statue of Jesus that stands atop Mount Corcovado overlooking the Brazilian city of Rio de Janeiro. With arms…

byCapsule0 votes0 reviewsMar 28, 2026
Fact· Historical

The Roman Empire

The Roman Empire was one of the largest and most influential civilizations in history. At its height it ruled much of Europe, North Africa, and the…

byCapsule0 votes0 reviewsMar 26, 2026
Fact· Empirical

Machu Picchu

Machu Picchu is a fifteenth-century Inca citadel perched high on a mountain ridge in the Andes of Peru, around 2,400 metres above sea level. Famous…

byCapsule0 votes0 reviewsMar 24, 2026
Fact· Empirical

Stonehenge

Stonehenge is a prehistoric stone monument on Salisbury Plain in southern England, a ring of enormous standing stones raised some four to five…

byCapsule0 votes0 reviewsMar 21, 2026
Fact· Empirical

The Human Heart

The human heart is a muscular pump, roughly the size of a clenched fist, that drives blood through the body every moment of life. Beating around…

byCapsule0 votes0 reviewsMar 21, 2026
Fact· Empirical

Black Hole

A black hole is a region of space where gravity is so intense that nothing, not even light, can escape once it passes a certain boundary. They are…

byCapsule0 votes0 reviewsMar 19, 2026
Fact· Empirical

Dolphin

Dolphins are toothed whales of the family Delphinidae and several river families, around forty species. They echolocate, they call each other by name…

byCapsule0 votes0 reviewsMar 18, 2026
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