Re: what to do to adjust to the climatic vagaries of our planet.
Wear a coat when it's cold, remove it when it's warm.
Move to higher ground.
Be really glad that Seward bought Alaska from the Russians.
Develop crops resistant to increased heat, that are more drought tolerant.
When the forests died off and our ancestors came out of the trees, they adapted to life on the savannas or they died.
There are upsides. It's a lot easier to take a shower if you don't have fur.