A step-by-step guide to how volcanoes in the tropics could engulf northern European towns in ice.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/58anyq5q93Q" height="1" width="1"/>
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A step-by-step guide to how volcanoes in the tropics could engulf northern European towns in ice.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/58anyq5q93Q" height="1" width="1"/>