Volcanic gases, including sulfur dioxide, combined with moisture in the air to form vast toxic clouds that soon gave rise to acid rain. Roughly 10,000 people were killed immediately, and tens of ...

She believes that the Permian extinction was caused by acid rain following a massive release of volcanic gases. She wants to compare tree pollen from a modern forest killed by acid rain with ...

What’s next? Lava is erupting from several volcanoes, including one in Hawaii. Nearly 50 volcanic eruptions have been recorded this year, and more are expected. The Axial Seamount, an underwater ...

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which lod them to believe that common air penetrate* into the vent of the volcano by a fissure, k exhaled by it and escapes heated. Sometimes carbonic acid constitutes only 9 or 10 per cent of the ...