This is the headline at Mother Jones: The Scariest Climate Change Graph Just Got Scarier
Basically, the handle of the hockey stick just got longer according to a new study. What that means is just that the time period of reliably reconstructed climate data that doesn't show the kind of increase in temperatures that recent history has exhibited has gotten longer. If this study follows the path of the original study by Michael Mann and his associates it will be interesting, indeed. You see, while many are acquainted with those who have claimed to debunk the "hockey stick", far fewer realize that not only did those who made that claim never did any such thing, but that other studies using different sources of data came up with basically the same climate changes that the "hockey stick" graph showed. Mann has been vilified for his research and is constantly attacked as a fake and a liar but no actual research has debunked his research no matter how many people say so. As with any new study how well this one stands up is still unknown but the attacks and defenses will probably not wait.