Capsule
DonateLog inCreate account
Menu

Navigation

  • Main page
  • Capsules
  • Learning
  • Mapping
  • Rankings
  • Organizations
  • Create
  • Forums
  • Research

Interaction

  • Messages
  • Verify
  • Help
  • About Capsule

Display

Appearance

Environment

EnvironmentsDefault
Capsule
Log in

Navigation

  • Main page
  • Capsules
  • Learning
  • Mapping
  • Rankings
  • Organizations
  • Create
  • Forums
  • Research

Interaction

  • Messages
  • Verify
  • Feedback
  • Help
  • About Capsule

Truth Classification

  • Fact
  • Theory
  • Hypothesis
  • Proven
  • Contested
  • Debunked
How classification works

Capsule of the Day

DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

New in the Library

  • FactTardigrade
  • FactMonarch Butterfly
  • FactSpider

Capsule

© 2026 Solis Holdings Group Inc. All rights reserved.

Built by Solis Dev, a technology studio operating under Solis Holdings Group Inc.

  • Policy
  • Terms of Use
  • Methodology
  • Corrections
  • Non-partisanship
  • Transparency
  • Developers
  • About
  • Discord
  • Sitemap

Capsule, the capsule-pill mark, and the clock logo are trademarks of Solis Holdings Group Inc. All content, source code, and design assets are the exclusive property of Solis Holdings Group Inc., unless otherwise noted. Unauthorized reproduction is prohibited.

The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered bywaterClear all

Results

Showing 1 to 7 of 7

NewestMost votedA to Z
Fact

Canals

Artificial waterways for navigation. Water carries heavy loads at a fraction of the effort land transport requires, and for a period of roughly a…

byCapsule
0 votes0 reviews
Aug 5, 2026
Fact

Irrigation

Supplying water to crops artificially. It made agriculture possible in places rainfall could not support, it is the largest human use of fresh water,…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

The Water Cycle

The continuous movement of water between ocean, atmosphere, land and living things. The quantity is fixed; what changes is where it is and in what…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Sewage Treatment

The process of removing contaminants from wastewater before returning it to the environment. It is among the least discussed and most consequential…

byCapsule0 votes0 reviewsAug 5, 2026
Debunked

Dowsing

The practice of locating underground water, minerals or other targets by walking over ground holding a forked stick or a pair of rods and watching…

byCapsule0 votes0 reviewsAug 4, 2026
Debunked

Polywater

A supposed polymeric form of water, reported from the Soviet Union in the 1960s and studied seriously worldwide for about a decade, which turned out…

byCapsule0 votes0 reviewsAug 4, 2026
Proven

Surface Tension

The tendency of a liquid surface to contract to the smallest possible area, because a molecule at the surface has fewer neighbours to attract it than…

byCapsule0 votes0 reviewsAug 4, 2026