Sentences with phrase «recent dramatic upturn»
64) Michael Mann of Penn State University has actually shown that the Medieval Warm Period and the Little Ice Age did in fact exist, which contrasts with his earlier work which produced the «hockey stick graph» which showed a constant temperature over the past thousand years or so followed by a recent dramatic upturn.
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Another favourite climate nostrum was upturned when Pope warned that the dramatic Arctic ice loss in recent summers was partly a product of natural cycles rather than global warming.