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Capsule of the Day

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 byFactelementsClear all

Results

Showing 1 to 2 of 2

NewestMost votedA to Z
Fact

Supernovae

The explosive destruction of a star, briefly outshining an entire galaxy. Supernovae produce and disperse most of the heavy elements, they trigger…

byCapsule
0 votes0 reviews
Aug 5, 2026
Fact

Carbon

The element that forms the backbone of all known life, occurs as both the hardest common substance and one of the softest, and forms more compounds…

byCapsule0 votes0 reviewsAug 5, 2026