Ad hominem: the article author, Bjorn Lomborg, is a noted climate change skeptic[1] whose work has been declared "scientifically dishonest" by watchdogs in the past[2].

The money seems to come from his being an environmental edgelord. Private funding -> almost nonexistent foundation -> Lomborg's pocket[3].

[1] http://www.businessinsider.com/the-ten-most-important-climat... [2] http://fivu.dk/en/publications/2004/annual-report-2003-the-d... [3] https://theconversation.com/still-no-consensus-for-bjorn-lom...