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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
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Fact

The Atmosphere

The layer of gas held around the Earth by gravity. It supplies the oxygen and carbon dioxide life requires, moderates temperature, blocks harmful…

byCapsule
0 votes0 reviews
Aug 5, 2026