“He has made several false statements about climate change science, including that the Earth has not warmed over the last 18 years (it has)”
Even Prof Hockey Stick himself now admits there is a pause in global warming.
http://www.nature.com/articles/nclimate2938.epdf?referrer_access_token=rO_LAj7Squh3f_qt6natqdRgN0jAjWel9jnR3ZoTv0OqExA1EwYluYLwiaayT9ble9FcNagQ1ss5L1V0KiWd-xzbFQjp8p3e-nUsgU7jNuUykRRWZpgMltUfROWf3xSKeGSSY7TvMiWdaeBCmNzlbQKCodQ3ivWje8eZYAs8Dr1uu8L-i3CHt8f_jYiil5eUpRpdxdWDCSCvqts_NYB_l8yUG-b6Qu0dtrZLMnaUyec%3D&tracking_referrer=www.nature.com