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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 byFactclimateClear all

Results

Showing 1 to 12 of 12

NewestMost votedA to Z
oceanography
Fact

Plankton

Organisms that drift in water rather than swimming against currents. They include the base of the marine food web and produce a large share of the…

byCapsule
0 votes0 reviews
architecture
Fact

Vernacular Architecture

Building made without architects, using local materials and inherited methods, adapted to local climate and way of life. It accounts for the…

byCapsule0 votes0 reviews
earth science
Fact

The Atmosphere

The layer of gas held around the Earth by gravity. It supplies the oxygen and carbon dioxide life requires, moderates temperature, blocks harmful…

byCapsule0 votes0 reviews
oceanography
Fact

Coral Reefs

Structures built by colonial animals from calcium carbonate, occupying a tiny fraction of the ocean floor and supporting a very large share of its…

byCapsule0 votes0 reviews
oceanography
Fact

Ocean Currents

Persistent flows of seawater, driven at the surface by wind and at depth by differences in density. They redistribute an enormous quantity of heat…

byCapsule0 votes0 reviews
earth science
Fact

The Water Cycle

The continuous movement of water between ocean, atmosphere, land and living things. The quantity is fixed; what changes is where it is and in what…

byCapsule0 votes0 reviews
archaeology
Fact

Dendrochronology

Dating events and objects by counting and matching the annual growth rings of trees. It is the most precise dating method available for the last…

byCapsule0 votes0 reviews
geology
Fact

Glaciers

Masses of ice large enough to move under their own weight. They hold most of the world's fresh water, they carved much of the landscape of the…

byCapsule0 votes0 reviews
biology
Fact· Empirical

Polar Bear

The polar bear, Ursus maritimus, is the largest living land carnivore and the only bear classified as a marine mammal. It is a very recent species…

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
geography
Fact· Empirical

The Sahara

The Sahara is the largest hot desert on Earth, a sweep of sand, gravel, and bare rock stretching across northern Africa from the Atlantic Ocean to…

byCapsule0 votes0 reviews
geography
Fact· Empirical

Antarctica

Antarctica is Earth's southernmost continent, a vast, frozen wilderness centred on the South Pole. It is the coldest, driest, windiest, and, on…

byCapsule0 votes0 reviews