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europe is burning hot
(slrpnk.net)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:

How much each change to the atmosphere has warmed the world:

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
From my own experience living there, temperatures in the mid 30Cs in The Netherlands is a lot harder than 40C in Portugal and Spain, because The Netherlands is more humid.
I don't think its the humidity, it must have to do something with latitudes. I moved from Italy to Northern Europe and 27-28ish here is as unbearable as 33-35 back home.
It's also possible that it's to do with habit.
Having lived for many years in various countries, I noticed how after about one year living somewhere my body had adjusted to the local temperature average and my idea of "too hot" or "too cold" had changed, as reflected in my choice of clothing when I went back to a different country were the average temperature is different (like going back to Lisbon in Winter and being comfortable wearing just a t-shirt whilst everybody else had coats on and though it was "cold"),
The average temperature in, for example, Amsterdam, is around 5C lower than Lisbon, so it makes sense that one's perception of "too hot" and "too cold" is at a lower temperatures for those living in the former than those living in the latter.
Yeah, this is also an option, but I have to say that I had friends over just a few weeks ago who brought sweaters when they saw the forecast at around 20C (against my recommendations), and they all were surprised by how warm it was despite the temperature (which in Italy is spring-like).