I posted this on a discussion on energy sources in a Greens politics discussion group.
It was deleted by the moderator because they didn't agree with some of the sources. Oh, and the author is an engineer for an oil company.
Hardly sufficient justification in my opinion, but it's their group and they can moderate as they see fit. If they want to have a dumb echo chamber, that will be their problem.
In any case, their actions have meant that I have left the group, and will promote the article as a contribution to discussion in other forums.