A Cabinet Office report has issued a stark warning of the dangers posed to Britain. Not by terrorism, economic collapse or global warming, but by the eruption of so-called ‘supervolcanoes’ in nearby Iceland. These hazards include extremes of cold in winter and heat in summer, catastrophic crop failure and deadly clouds of sulphur dioxide.

read more: Supervolcanoes Spewing Deadly Gases are the Greatest Hazard to UK – Yahoo News UK.