Be more specific Jonathan.

When you say “climate change”, you are referring to anthropogenic CO2 and global warming, yes?

If so, there is substantial debate right not at highest levels questioning not only the supposed IPCC consensus, but the policy prescriptions from that. 

The science is not ‘settled’, nor is the efficacy & legitimacy of sweeping ‘climate’ policies. 

IOW - it’s an open question, and so should be the discussion.