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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 byTheorybiologyClear all

Results

Showing 1 to 6 of 6

NewestMost votedA to Z
Theory· Scientific

Punctuated Equilibrium

Punctuated equilibrium is a theory about the pace of evolution. It proposes that species tend to remain largely unchanged for long stretches of time,…

byCapsule
0 votes0 reviews
Jun 22, 2026
Theory· Scientific

The Modern Evolutionary Synthesis

The modern synthesis is the theory, developed in the first half of the twentieth century, that united Charles Darwin's idea of evolution by natural…

byCapsule0 votes0 reviewsJun 19, 2026
Theory

Endosymbiotic Theory

Endosymbiotic theory explains the origin of the complex cells that make up plants, animals, fungi, and other higher organisms. It proposes that key…

byCapsule0 votes0 reviewsJun 11, 2026
Theory

Mendelian Inheritance

Mendelian inheritance is the set of principles describing how traits are passed from parents to offspring through discrete units we now call genes.…

byCapsule0 votes0 reviewsJun 11, 2026
Theory

Cell Theory

Cell theory is one of the foundational ideas of biology. It holds that all living things are made of cells, that the cell is the basic unit of life,…

byCapsule0 votes0 reviewsJun 11, 2026
Theory· Scientific

Evolution by Natural Selection

Evolution by natural selection is the scientific theory that explains how the diversity of life arose and continues to change. It holds that…

byCapsule0 votes0 reviewsFeb 14, 2026