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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 bylifeClear all

Results

Showing 1 to 4 of 4

NewestMost votedA to Z
astrobiology
Fact

Biosignatures

Measurable indicators that life is or was present. They are how the search for life beyond Earth is actually conducted, since organisms cannot be…

byCapsule
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astrobiology
Fact

The Habitable Zone

The range of distances from a star within which a planet could hold liquid water on its surface. It is the standard first filter in the search for…

byCapsule0 votes0 reviews
astrobiology
Fact

Extremophiles

Organisms that live in conditions that would destroy most life. They are mostly microorganisms, they have substantially widened the definition of a…

byCapsule0 votes0 reviews
chemistry
Fact

Carbon

The element that forms the backbone of all known life, occurs as both the hardest common substance and one of the softest, and forms more compounds…

byCapsule0 votes0 reviews