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Ancient Global Dimming Linked to Volcanic Eruption Ker Than for National Geographic NewsMarch 19, 2008 A "dry fog" that muted the sun's rays in A.D. 536 and plunged half the world into a famine-inducing chill was triggered by the eruption of a supervolcano, a new study says. The cause of the sixth-century global dimming has long been a matter of debate, but a team of international researchers recently discovered acidic sulphate molecules, which are signs of an eruption, in Greenland ice. This is the first physical evidence for the A.D. 536 event, which according to ancient texts from Mesoamerica, Europe,...

TALE OF ARTHUR POINTS TO COMET CATASTROPHE From The Times, 9 September 2000 http://www.the-times.co.uk BY NICK NUTTALL Arthur: myth links him to fire from the sky THE story of the death of King Arthur and its references to a wasteland may have been inspired by the apocalyptic effects of a giant comet bombarding the Earth in AD540, leading to the Dark Ages, a British scientist said yesterday. The impacts filled the atmosphere with dust and debris; a long winter began. Crops failed, and there was famine, Dr Mike Baillie of Queen's University, Belfast, told the British Association for the Advancement...

March 26, 2002 Tree Rings Show a Period of Widespread Warming in Medieval Age By KENNETH CHANG A new study of old tree rings shows that 1,000 years ago, long before power plants and sport utility vehicles, temperatures across North America, Europe and Asia rose in a period of unusual warmth. In warm weather, trees thrive and grow a thick ring of wood in their trunks for that year. In cold years, growth slows and the tree ring is thin. Temperatures were known to be warm in Europe between 900 and 1100, what is known as the Medieval Warm Period....