One of the most contested graphs in climate science has been the hockey stick. Inconveniently for gain-sayers later science has confirmed the shape of the thing as sites such as Skeptical Science and New Scientist confirm.
The hockey stick was confined to temperatures for the last 1000 years. Graphs of the whole Holocene era were rare, although they did exist, as the featured image above. Now a study by Marcott et al has used 73 proxies to study average global temperature for the whole Holocene period of the last 11,300 years. You can read about it at New Scientist, Mother Jones, Climate Progress here and here. Continue reading New bigger, better hockey stick