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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 byecologyClear all

Results

Showing 21 to 26 of 26

NewestMost votedA to Z
ecology
Theory· Scientific

Keystone Species

A keystone species is one whose effect on its ecosystem is disproportionately large relative to its abundance. The concept reorganised how ecologists…

byCapsule
0 votes0 reviews
economics
Contested

The Tragedy of the Commons

The tragedy of the commons is the argument that a resource held in common will inevitably be destroyed, because each user gains the full benefit of…

byCapsule0 votes0 reviews
ecology
Theory· Scientific

The Theory of Island Biogeography

The theory of island biogeography explains how many species an island will hold, and why. Developed in the 1960s, it proposes that the number of…

byCapsule0 votes0 reviews
geography
Fact· Empirical

Amazon Rainforest

The Amazon Rainforest is the largest tropical rainforest on Earth, a vast sea of green covering some 5.5 million square kilometres across nine South…

byCapsule0 votes0 reviews
biology
Fact· Empirical

Domestic Cat

The domestic cat, Felis catus, is the most numerous small carnivore on Earth, with something over six hundred million individuals. It is also barely…

byCapsule0 votes0 reviews
geography
Fact· Empirical

Great Barrier Reef

The Great Barrier Reef is the world's largest coral reef system, stretching more than 2,300 kilometres along the north-east coast of Australia. So…

byCapsule0 votes0 reviews
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