The Marcott study is one that raised a stink because it was an attempt to create yet another «hockey stick»
graph in which all of human history — this time, going back 11,000 years —
shows a flat line of global temperatures, with only recent decades
showing an
alarming upward trend like the blade of a hockey stick.
There was an excellent recent post on wuwt beautifully
showing, by means of
graphs, how the recent supposedly
alarming uptick in temps begins to look more and more benign as one steps back further and further in time...