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Humans aren't the only animals that can alter landscapes.
Geologists have found proof that a microcontinent exists near the island of Mauritius.
Zealandia, off the eastern coast of Australia, has existed for millions of years.
It was one of the Earth's momentous times. Continents collided. Volcanoes erupted. Ocean currents shifted. Species ran amok.
Geysers spout up where a column of underground water is heated to boiling by "magma," or molten rock, pushing the water upward.
According to geologists, there's something very hot going on under all that ice.
Most of us take our oxygen-rich atmosphere for granted. Once upon a time, though, Earth's air was very different.
Scientists link fracking to the surge in earthquakes across the U.S.