We might have passed the "holocene climate optimum" already (haven't researched it much) https://en.wikipedia.org/wiki/Atlantic_%28period%29 https://en.wikipedi

We might have passed the "holocene climate optimum" already (haven't researched it much) https://en.wikipedia.org/wiki/Atlantic_%28period%29 https://en.wikipedia.org/wiki/Atlantic_%28period%29 During the holocene, (last 10,000 years, ie after the ice age) Northern Europe has seen much warmer temperatures than the average of last century. Finland had oak forests in the stone age five thousand years ago. And there were much colder periods than now in between etc. Currently there's a lot of old oaks only in the warmest most favorable locations and forests are mostly pine. After all they take centuries to grow. But oak is again spreading.