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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 bybiologyanatomyClear all

Results

Showing 1 to 4 of 4

NewestMost votedA to Z
Fact· Empirical

The Human Skeleton

The human skeleton is the internal framework of bones that supports the body, protects its organs, and allows it to move. An adult skeleton has 206…

byCapsule
0 votes0 reviews
Jun 11, 2026
Fact· Empirical

The Human Eye

The human eye is the organ of sight, a remarkable structure that turns light into the images we see. Roughly the size of a ping pong ball, it…

byCapsule0 votes0 reviewsJun 11, 2026
Fact· Empirical

The Human Brain

The human brain is the command centre of the body and the most complex object known in the universe. Weighing only about 1.4 kilograms, it contains…

byCapsule0 votes0 reviewsApr 21, 2026
Fact· Empirical

The Human Heart

The human heart is a muscular pump, roughly the size of a clenched fist, that drives blood through the body every moment of life. Beating around…

byCapsule0 votes0 reviewsMar 21, 2026