Climate changes - that's not in dispute.
Global warming is actually in dispute and that's why they changed their trade name to "Climate change" It's a one fits all, unless the climate stays EXACTLY the same.
Global warming is a fact. It is the only reasonable explanation for virtually every glacier on the planet receding and rising oceans. We are in a series of record setting global warm temperatures and, with the extremely strong el Nino, next year will certainly set another global temperature record.
What is in dispute is the claim that human activity is the main contributing factor to global warming
Agreed. At this point, it is largely irrelevant.
IMHO, we have passed the "tipping point" and there is nothing we can (or will) do to change the situation. The question now is what, if anything, can be done to prepare for the consequences.
...(and subsequently we'd need a world government to regulate and restrict human activities on Earth). It's no coincidence that most "Climate Change" supporters do have strong left, socialist leanings.
I don't see humanity achieving enough unity of purpose for a world government to take place. The "rich" nations intend to maintain their standard of living and the "poor" nations want to catch up.... which cannot be done (today) without huge consumption of carbon fuels. The "climate control treaties" in place are symbolic and will do nothing to change anything.
Actually global warming and increase in carbon dioxide could be a good thing since it makes plants grow more, the increased biomass could help solving problems.
I have heard that argument. However, global warming will also change weather patterns. Areas that are current "breadbaskets" may become deserts. It is possible some deserts may become breadbaskets, but there will be huge displacements of population.
Rising sea levels will also cause major problems. Many of the world's major cities will be flooded by a significant increase of sea level.