Because you can define the problem. Define 'climate change'.
But you DO invent, contrive, and bullshit your way into claiming there is a problem.
Sort what out? Define 'climate change'.
Define 'climate change'.
No gas or vapor has the capability to warm the Earth.
CO2 and other greenhouse gases retard infrared radiation escaping into space. The absorb and re-radiate immediately the IR. They effectively warm by slowing cooling