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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 bybiologyneuroscienceClear all

Results

Showing 1 to 2 of 2

NewestMost votedA to Z
Contested

Are Animals Conscious?

Whether animals have conscious experiences, an inner life of feelings and awareness, is a deep and genuinely contested question. That many animals…

byCapsule
0 votes0 reviews
Jun 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