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Why do volcanoes erupt in some areas and not others?
Volcanoes erupt when magma forces its way through the Earth's crust. Why does this happen? Gladys Kianji, a geologist from Nairobi University, and Anand Jagatia explain.
Image: Molten lava is spewed from the caldera of Iceland's Bárdabunga volcano (Credit: Getty Images)
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