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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 bybiologyreproductionClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Fact· Empirical

Seahorse

Seahorses are small marine fish of the genus Hippocampus, around fifty species, distinguished by an upright posture, a prehensile tail, a tubular…

byCapsule
0 votes0 reviews
Aug 7, 2026
Debunked

Preformationism

The doctrine that an organism exists fully formed in miniature within the egg or the sperm, and that development is merely the enlargement of a…

byCapsule0 votes0 reviewsAug 4, 2026
Proven

Meiosis

The cell division that halves the chromosome number and shuffles the genome at the same time. It is the reason sexual reproduction produces…

byCapsule0 votes0 reviewsAug 3, 2026