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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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  • FactTardigrade
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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byContestedecologyClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Contested

The Collapse of Easter Island

Whether the people of Rapa Nui destroyed their own society by deforesting the island, or whether the collapse was caused by European contact, disease…

byCapsule
0 votes0 reviews
Aug 4, 2026
Contested

Trophic Cascades

A trophic cascade occurs when a change at one level of a food web propagates down through the levels beneath it. The mechanism is real and…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

The Tragedy of the Commons

The tragedy of the commons is the argument that a resource held in common will inevitably be destroyed, because each user gains the full benefit of…

byCapsule0 votes0 reviewsAug 2, 2026