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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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  • FactTardigrade
  • FactMonarch Butterfly
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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byFactnorth-americaClear all

Results

Showing 21 to 25 of 25

NewestMost votedA to Z
geography
Fact· Empirical

United States

The United States is a large country in North America, made up of fifty states spread across the continent and beyond, from the Atlantic to the…

byCapsule
0 votes0 reviews
geography
Fact· Empirical

Mexico

Mexico is a large country in the southern part of North America, bordered by the United States to the north and by Guatemala and Belize to the south.…

byCapsule0 votes0 reviews
geography
Fact· Empirical

Canada

Canada is a country in North America, the second-largest in the world by total area, stretching from the Atlantic Ocean in the east to the Pacific in…

byCapsule0 votes0 reviews
biology
Fact· Empirical

Bald Eagle

The bald eagle, Haliaeetus leucocephalus, is a large fish-eating raptor of North America, the national bird of the United States, and the standard…

byCapsule0 votes0 reviews
geography
Fact· Empirical

Niagara Falls

Niagara Falls is a group of three powerful waterfalls on the Niagara River, straddling the border between Canada and the United States. Though not…

byCapsule0 votes0 reviews
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