Climate change? What does that mean? It used to be global warming but the facts were so blatantly unsupportive that the sly shift to 'climate change' was adopted. Now it's a mantra for unthinking people. But it works because heads I win, tails you lose. The climate is always changing. Temperature changes are slight and hedged with ifs and buts. Now if you mean that the CO2 level in the atmosphere has increased from the pre-industrial levels of around 270 parts per million to 400 parts per million today then I'm with you. Recalling that life on earth would be impossible were the level to reduce to less than around 120 ppm, let's get this into perspective. Meanwhile Arctic Greenland is indeed turning green (NASA study). https://youtu.be/Yi8SFOJffFA while the temperature in that area has remained unchanged over the past 16 years prior to this year's El Nino.

Anyway, I'm sure that the greening of the Arctic and of many places elsewhere as evidenced by satellite imagery is a disastrous phenomenon we should discourage.

“An ancient forest has thawed from under a melting glacier in Alaska and is now exposed to the world for the first time in more than 1,000 years.". An observation probably invented by some imaginative climate denier?

As Judith Curry has said: "Efforts to link dangerous impacts of extreme weather events to human-caused warming are misleading and unsupported by evidence. Climate change is a ‘wicked problem’ and ill-suited to a ‘command and control’ solution. It has been estimated that the U.S. national commitments to the UN to reduce emissions by 28% will prevent three hundredths of a degree centigrade in warming by 2100...".

>> ... is a disastrous phenomenon we should discourage.

Yes. Google methane and permafrost melting.