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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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  • FactTardigrade
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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byFactevolutionClear all

Results

Showing 1 to 9 of 9

NewestMost votedA to Z
Fact· Empirical

Ant

Ants are eusocial insects of the family Formicidae, with over 14,000 described species and an estimated global population around twenty quadrillion…

byCapsule
0 votes0 reviews
Aug 7, 2026
Fact· Empirical

Platypus

The platypus, Ornithorhynchus anatinus, is a semiaquatic egg-laying mammal of eastern Australia. It lays eggs, produces milk without nipples, detects…

byCapsule0 votes0 reviewsAug 7, 2026
Fact

Viruses

Infectious agents consisting of genetic material inside a protein coat, which reproduce only inside living cells. They are the most numerous…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Mass Extinctions

Intervals in which a large proportion of species disappeared worldwide in a geologically short time. Five are conventionally recognised in the past…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Archaea

A domain of single-celled organisms distinct from both bacteria and eukaryotes. Their recognition as a separate branch of life in 1977 restructured…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Sex Determination

The mechanisms by which an organism develops as male, female or another form. The systems are far more varied than the mammalian arrangement…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Trilobites

An extinct class of marine arthropods that existed for roughly 270 million years, left an exceptionally rich fossil record, and are among the most…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Mutation

A change in the sequence of an organism's DNA. Mutations are the ultimate source of all genetic variation, most have no effect, some cause disease,…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Fossils

The preserved remains or traces of past life. They are the direct evidence for the history of life on Earth, and the record they form is…

byCapsule0 votes0 reviewsAug 5, 2026