Photo: Volcanoes Wiped Out All Forests 250 Million Years Ago



Trees damaged by the effects of toxic acid rain in the highly polluted area known as the "Black Triangle" are seen in northern Czechoslovakia in 1991.

A similar treeless landscape full of wood-eating fungi dominated Earth about 250 million years ago, when acid rain from a volcanic eruption killed off most life on Earth.

Photograph by Tom Stoddart/Getty Images


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