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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 byContestedphysicsClear all

Results

Showing 1 to 8 of 8

NewestMost votedA to Z
Contested

Room-Temperature Superconductors

A material that conducted electricity with no resistance at ordinary temperatures and pressures would be genuinely transformative, eliminating losses…

byCapsule
0 votes0 reviews
Aug 3, 2026
Contested

Graphene

Graphene is a single layer of carbon atoms arranged in a hexagonal lattice, one atom thick. Its measured properties are extraordinary and not in…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

Climate Sensitivity

Climate sensitivity is the amount of warming that follows from doubling the concentration of carbon dioxide in the atmosphere. It is the single…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

Ball Lightning

Ball lightning is a reported phenomenon in which a glowing, floating sphere of light appears, usually during thunderstorms. Many people claim to have…

byCapsule0 votes0 reviewsJun 12, 2026
Contested

The Nature of Time

Time is one of the most familiar parts of our experience, yet what it really is remains one of the deepest and most contested questions in physics…

byCapsule0 votes0 reviewsJun 12, 2026
Contested

The Anthropic Principle

The anthropic principle concerns the striking observation that the universe appears remarkably fine tuned for the existence of life. Many of the…

byCapsule0 votes0 reviewsApr 8, 2026
Contested

The Multiverse

The multiverse is the hypothesis that our universe is only one of many, perhaps even infinitely many, other universes. It is taken seriously by many…

byCapsule0 votes0 reviewsMar 30, 2026
Contested

Interpretations of Quantum Mechanics

Quantum mechanics is the most successful physical theory ever devised, predicting the behavior of atoms, light, and subatomic particles with…

byCapsule0 votes0 reviewsMar 24, 2026