A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


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Who needs to update the HockeyStick graph – it’s only the fate of the planet at stake?

Two weeks ago on the HockeyStick Update post we discussed the miracle of how the Bristlecones used in HockeyStick graphs had finally (sort of) been updated. I marvelled that 800 year old tree rings were easier to find than ones from 2002. Now 16 years after the MBH98 “seminal” (well, popular) paper was published, Salzer et al had finally found some rare modern trees and updated the temperatures after 1980, but gosh, the tree rings didn’t proxy for the red-hot rising trends of the modern era, instead they recorded a fall. That particular hockeystick collapsed (again).

It took a while, but Greg Laden bravely dropped in here on Thursday to share a link to his post on how skeptics are misunderstanding the update with “mind numbing” arguments.  My reply to him on the old thread may have gone unnoticed. So I’ll repeat it here (with slight edits). Perhaps Greg missed my reply?

Steve McIntyre has also taken Laden to task on his blog.

Greg Laden  December 19, 2014 at 12:54 am

A post on one of the studies you refer to here:


Joanne Nova  December 19, 2014 at 1:41 am