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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 byHypothesismetabolismClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
medicine
Hypothesis

The Warburg Effect

Cancer cells burn glucose wastefully, converting it to lactate even when oxygen is plentiful. The observation is a century old and undisputed, it is…

byCapsule
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biology
Hypothesis

The Free Radical Theory of Ageing

The proposal that ageing is cumulative damage from reactive oxygen species produced by normal metabolism. It dominated ageing research for half a…

byCapsule0 votes0 reviews
anthropology
Hypothesis

The Expensive Tissue Hypothesis

The proposal that the human brain could only grow large because the gut shrank, since both are metabolically costly and the body's energy budget is…

byCapsule0 votes0 reviews