Is it too late to reverse climate change?

Your question touches what the latest science says about reversing warming — I'll pull current IPCC and climate research to give you a grounded answer.

No — but the word "reverse" needs clarification.

Scientists make a distinction between completely reversing climate change to pre-industrial conditions, and stopping, limiting, or partially reversing future warming.

1. Some changes are already irreversible on human timescales

> Humans have caused major climate changes to happen already, and we have set in motion more changes still

NASA explains:

> while the effects of human activities on Earth's climate to date are irreversible on the timescale of humans alive today, every little bit of avoided future temperature increases results in less warming that would otherwise persist for essentially forever

A NOAA-led study reached a similar conclusion:

> Climate Change Largely Irreversible For Next 1,000 Years

That includes:

> Completely reversing climate change overnight is not possible. However, we can significantly reduce its impacts by lowering greenhouse gas emissions and restoring natural ecosystems

2. It is not too late to prevent the worst impacts

> While some effects of climate change are irreversible, it is not too late to act. The IPCC states that urgent and immediate action is needed to avoid the worst impacts

Global average temperatures have risen and weather extremes have already increased, so

> the short answer to whether it's too late to stop climate change is: yes. But there's still time to prevent cascading effects, as every degree of additional warming has exponentially disastrous impacts

Key points from NASA and the IPCC:

> every bit of warming we avoid will reduce the extremes of climate fluctuation... It will never be too late to take action for the climate

3. Warming can be stopped and then slowly reversed — if emissions stop

NASA notes that:

> if we stopped adding greenhouse gases, global temperatures would level off within a few years

More fully:

> If all human emissions of heat-trapping gases were to stop today, Earth's temperature would continue to rise for a few decades but would eventually stabilize
> If humans don't emit any additional planet-warming gasses, then natural processes would begin to slowly remove the excess carbon dioxide from the atmosphere, and global temperatures would gradually begin to decline

That natural removal is very slow — taking decades to centuries — which is why active mitigation and carbon removal are needed.

The IPCC says it is still physically possible to stay within 1.5°C or 2°C, but it would require

> immediate, rapid and large-scale reductions in greenhouse gas emissions

Specifically:

> limiting warming to 2°C requires reaching net-zero carbon dioxide emissions globally by the early 2070s. For 1.5°C, that deadline was the early 2050s

Bottom line

Scientists describe the needed response as two-track: adapt to the changes already locked in, and aggressively cut emissions to avoid locking in far worse changes.