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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 byHypothesisdeep timeClear all

Results

Showing 1 to 2 of 2

NewestMost votedA to Z
Hypothesis

The Boring Billion

The proposal that Earth spent roughly a billion years, from about 1.8 to 0.8 billion years ago, in near-total stasis: stable climate, stable…

byCapsule
0 votes0 reviews
Aug 4, 2026
Hypothesis

The Silurian Hypothesis

If an industrial civilisation had existed on Earth millions of years before our own, would we be able to tell? Gavin Schmidt and Adam Frank asked the…

byCapsule0 votes0 reviewsAug 3, 2026