Maybe they will, maybe they won’t. All we know is that the climate is changing and we appear to be causing it as the average global temperature reversed and began increasing during what would normally be a cooling period. We also believe that we’re the ones causing it because the increase in temperature correlates with the increase in CO2, methane and other greenhouse gases emitted. Now, of course correlation isn’t causation, but because gases like CO2 are known to have a warming effect due to their ability to trap heat, it makes sense to believe that these gases would contribute to a hotter climate.
It’s entirely possible that, in hindsight, we’ll find that we were panicking over nothing, and that the earth fixes itself or that this is somehow normal. However, that’s a hell of a gamble considering this is our only home in the cosmos. Do you really want to take that gamble?