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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 561 to 580 of 599

NewestMost votedA to Z
Fact· Empirical

Elephant

Elephants are the largest living land animals, and there are three species rather than the two most references still give. They have the longest…

byCapsule
0 votes0 reviews
Mar 15, 2026
Fact· Historical

The Printing Press

The printing press is a machine for transferring ink onto paper to reproduce text and images quickly and in large numbers. Its development in Europe…

byCapsule0 votes0 reviewsMar 14, 2026
Fact

DNA (Deoxyribonucleic Acid)

Deoxyribonucleic acid (DNA) is the molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of…

byCapsule0 votes0 reviewsMar 14, 2026
Fact· Historical

French Revolution

The French Revolution (1789–1799) was a period of radical political and social upheaval in France that ended the Bourbon monarchy, abolished feudal…

byCapsule0 votes0 reviewsMar 8, 2026
Fact· Empirical

Vaccines

A vaccine is a preparation that trains the immune system to recognize and fight a specific disease before the body is ever exposed to the real…

byCapsule0 votes0 reviewsMar 6, 2026
Fact· Empirical

Tiger

The tiger, Panthera tigris, is the largest living cat, a solitary ambush predator of Asian forest, grassland and mangrove. It occupies something like…

byCapsule0 votes0 reviewsMar 1, 2026
Fact· Historical

The Eiffel Tower

The Eiffel Tower is a wrought iron lattice tower in Paris, France, and one of the most recognized structures in the world. Standing about 330 metres…

byCapsule0 votes0 reviewsMar 1, 2026
Fact· Empirical

Grand Canyon

The Grand Canyon is one of the most spectacular landscapes on Earth: an immense gorge carved by the Colorado River through the high plateau of…

byCapsule0 votes0 reviewsFeb 28, 2026
Fact· Empirical

Giant Panda

The giant panda, Ailuropoda melanoleuca, is a bear that eats bamboo. That sentence contains the whole problem: it has the digestive system of a…

byCapsule0 votes0 reviewsFeb 26, 2026
Fact· Historical

Nelson Mandela

Nelson Mandela was a South African anti-apartheid revolutionary and statesman who served as the country's first democratically elected president.…

byCapsule0 votes0 reviewsFeb 26, 2026
Fact· Empirical

Domestic Cat

The domestic cat, Felis catus, is the most numerous small carnivore on Earth, with something over six hundred million individuals. It is also barely…

byCapsule0 votes0 reviewsFeb 26, 2026
Fact· Empirical

Nile Crocodile

The Nile crocodile, Crocodylus niloticus, is Africa's largest freshwater predator and the second largest crocodilian after the saltwater crocodile.…

byCapsule0 votes0 reviewsFeb 26, 2026
Fact

The Founding and Agricultural Development of Brandon, Manitoba

Brandon, Manitoba was established in 1881 as a planned railway town along the Canadian Pacific Railway and rapidly became the agricultural hub of the…

byCapsule0 votes0 reviewsFeb 25, 2026
Fact· Empirical

Great Pyramid of Giza

The Great Pyramid of Giza is the largest of the Egyptian pyramids and the oldest of the Seven Wonders of the Ancient World, and the only one still…

byCapsule0 votes0 reviewsFeb 24, 2026
Fact· Empirical

Niagara Falls

Niagara Falls is a group of three powerful waterfalls on the Niagara River, straddling the border between Canada and the United States. Though not…

byCapsule0 votes0 reviewsFeb 23, 2026
Fact· Empirical

Great Wall of China

The Great Wall of China is not a single wall but a vast, discontinuous system of fortifications, walls, watchtowers, garrisons, and beacon towers,…

byCapsule0 votes0 reviewsFeb 17, 2026
Fact· Empirical

The Sahara

The Sahara is the largest hot desert on Earth, a sweep of sand, gravel, and bare rock stretching across northern Africa from the Atlantic Ocean to…

byCapsule0 votes0 reviewsFeb 16, 2026
Fact· Empirical

Great White Shark

The great white shark, Carcharodon carcharias, is the largest predatory fish, reaching about six metres. It is warm-blooded in a limited and…

byCapsule0 votes0 reviewsFeb 14, 2026
Fact· Empirical

Giraffe

The giraffe is the tallest living land animal, at up to about five and a half metres. Almost everything distinctive about it follows from that…

byCapsule0 votes0 reviewsFeb 14, 2026
Fact· Empirical

Mount Fuji

Mount Fuji is the highest mountain in Japan and one of the most beloved and recognisable mountains in the world. Rising 3,776 metres in a…

byCapsule0 votes0 reviewsFeb 12, 2026
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