The Heartland Institute's Seventh "International Conference on Climate Change" - the somewhat-annual gathering of climate deniers that we call Denial-a-Palooza - is underway in Chicago. Heartland's contrarian gathering this year is clouded by the group's incredibly offensive billboard campaign that flamed out within hours but is causing lasting damage to the group's fading financial support from corporations, defections by staff and board directors and other headaches. 

Below is DeSmog's analysis of the "co-sponsors" of this year's ICCC7 conference showing that these organizations have received more than $67 million over the past three decades from ExxonMobil, the Koch Brothers and the right-wing Scaife family foundations. This is just a subset of the funding flowing to these groups from just three sources, and is certainly not all earmarked to cast doubt about climate change science and policy. But it provides a window into Heartland's current and historical support from fellow travelers who endorse the group's anti-science agenda.