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Most of Earth's volcanoes are on the seafloor

The greatest number of Earth's volcanoes occur on the ocean floor.

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Eruptions do not happen at random. Sixty percent of all active volcanoes sit at the boundaries between tectonic plates, where the plates spread apart, collide, or slide past each other.

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Antarctica is the world's largest desert

Antarctica qualifies as a desert because it receives very little precipitation, despite being covered by ice.

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Canada has the world's longest coastline

Canada has more coastline than any other country, with estimates exceeding 200,000 kilometers.

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The coldest recorded air temperature was in Antarctica

Vostok Station recorded an air temperature of -89.2°C (-128.6°F) on July 21, 1983.

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