On IPCC CO2/temp targets: Even the IPCC doesn’t know where they came from — They are arbitrary … and not science-based. Even the IPCC doesn’t know where the 2-degree C target came from. Share this: Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook More Share on LinkedIn (Opens in new window) LinkedIn Share on Pinterest (Opens in new window) Pinterest Share on Tumblr (Opens in new window) Tumblr Share on Reddit (Opens in new window) Reddit