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FactSurgeryTreatment by physical intervention in the body. Surgery was limited for millennia not by knowledge of anatomy but by th…

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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byFactyemenClear all

Results

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Fact· Empirical

Yemen

Yemen is a country at the southern end of the Arabian Peninsula, where the Red Sea meets the Arabian Sea. In ancient times its fertile, well-watered…

byCapsule
0 votes0 reviews
Jun 17, 2026