Final answer:
The author claims that climate change denial persists despite scientific consensus, hindered by political factors and vested interests, creating significant global policy challenges.
Step-by-step explanation:
The author’s main claim in the text “Why Even Argue Climate Change?” often due to political reasons or vested interests. The author presents the problem of climate change and confronts common counter-arguments, pointing out that the rapid climatic changes since the Industrial Revolution are unprecedented in human history and different from natural climate variations in the past. The author also suggests how these denials have significant global consequences, particularly through their influence on policy-making, and emphasizes the necessity for a clear understanding and action against climate change.