Who is this professor you referred to ?
If you could let me know it would be appreciated.

Also you may like to know that a long time ago the UK had thriving vineyards. That fact was taught in school in 1960's in the UK
The last time the Thames froze over was in the late 1950's which was when they started this climate change bullshit for the first time, claiming that we were creating a new Ice age.
As far as I know you still can not farm the land in Greenland unless you want to farm Ice