A video viewed thousands of times online disputes the reliability of an authoritative graph showing cooling global temperatures over 1,000 years and rapid warming in the 20th century. A speaker in the ...

In fact, later studies support the key conclusion: the world is warmer now than it has been for at least 1000 years The “hockey stick” graph was the result of the first comprehensive attempt to ...

The infamous “hockey stick” graph, which shows the northern hemisphere beginning to rapidly warm around the industrial age, has been backed up by new research. Michael Mann, who helped develop the ...

Climate scientist Michael Mann is possibly best known for the iconic "hockey stick" graph published in 1998 that showed the steep rise in planetary temperatures. He was also one of the targets of a ...

The “hockey stick” graph has been both a linchpin and target in the climate change debate. As a plot of average Northern Hemisphere temperature from two millennia ago to the present, it stays ...

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