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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
Filtered bypopulationClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Fact

Urbanisation

The shift of a population from rural to urban living. More than half the world's people now live in cities, a threshold crossed around 2007, and the…

byCapsule
0 votes0 reviews
Aug 5, 2026
Fact

The Census

A count of a population, conducted by a state, at a defined moment. It is among the oldest functions of government and remains the foundation on…

byCapsule0 votes0 reviewsAug 5, 2026
Theory

The Demographic Transition

The observed pattern in which societies move from high birth and death rates to low ones, passing through a period of rapid population growth while…

byCapsule0 votes0 reviewsAug 4, 2026