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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 byFactphysiologyClear all

Results

Showing 1 to 4 of 4

NewestMost votedA to Z
Fact

The Marathon

A running race of 42.195 kilometres. The distance is arbitrary, its founding story is largely legend, and it has become the standard test of…

byCapsule
0 votes0 reviews
Aug 5, 2026
Fact

Hormones

Chemical messengers released into the bloodstream by one tissue to act on another. They coordinate processes across the whole body over minutes to…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

The Lungs

The organs that bring air into contact with blood so that oxygen can enter and carbon dioxide can leave. They achieve this across a surface roughly…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

The Liver

The largest internal organ and the most chemically versatile, performing several hundred distinct functions. It is the only human internal organ that…

byCapsule0 votes0 reviewsAug 5, 2026