 | Volcanoes blamed for worst mass extinction
http://news.independent.co.uk/world/science_technology/story.jsp?story=603039
By Steve Connor, Science Editor
21 January 2005
The greatest mass extinction in the 3.5-billion-year history of life on
Earth probably occurred as a result of climate change resulting from a
series of huge volcanic eruptions, researchers believe.
They said a study of "the great dying", when 90 per cent of marine life
became extinct and three-quarters of land animals and plants died out,
had failed to support earlier suggestions of the Earth and a giant
asteroid colliding.
Volcanoes Volcano volcanic
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