Thinktank goes and hires a couple of global warming "skeptics" for $50K/year. They produce writings and speakings, which the thinktank personnel shop around to appropriate outlets for minimal fees. Op-Eds are distributed to newspapers. Pre-edited 5-minute segments are distributed to TV news programs. The media outlets are happy to receive ready-to-publish content for cheap.
You the viewer receive all this information against global warming from a "neutral, non-partisan" thinktank. You are likely to believe it. The name of the CEO's oil and gas corporation is never mentioned.
Money laundering is taking money from illegal sources and turning it into clean, usable money. Thinktanks are engaged in the practice of idea laundering.
2. This is mostly how Gartner, Forrester, et. al. work.