[Pinatubo]

Lomborg has openly stated multiple times that he believes in anthropogenic climate change. How is he a "climate denier"?

This post looks like a cut-and-paste from a political blog.

[asgard1024]

More correct would be to say, at the time (2006), Lomborg was a denier. He only recently turned around (although first by saying that climate change is not a serious problem), which is to his credit. Still in retrospect, people shouldn't have listened to him, he was wrong.

[Pinatubo]

This is false. The introduction to the section on climate change in The Skeptical Environmentalist (published in 2001) states "This chapter accepts the reality of man-made global warming" (p259).