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.
Not by utter necessity, but because maintaining price and quality would make the profit margins smaller
Well, there's certain varieties of hops that don't fare well under the changing climate and that may provide a better taste than other varieties, or at the very least a characteristic taste that people enjoy.
Obviously, with enough money, you could still grow these varieties in basically lab conditions, but well, that will hike the price significantly and they can't compete anymore, so that variety/taste will go missing.