The phrase "debate about climate change" refers to a discussion or argument regarding the issue of climate change and its impact on our planet. Full definition
We — a growing number of volunteers and coalition members — are raising public debate about climate change and taking responsibility into our own hands, right here in our own city. (carbonpricedc.org)
I can speak personally for the lively debate about climate change policy. (nybooks.com)
To win the scientific debate about climate change, we just... oh wait, we already did. (dotearth.blogs.nytimes.com)