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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 bybiologycirculationClear all

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Showing 1 to 1 of 1

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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…

byCapsule
0 votes0 reviews
Mar 21, 2026