One Thing

In the 1991 movie “City Slickers”, the old cowboy Curly tells the protagonist the secret to life is “one thing.”

“Just that one thing. You stick to that and everything else don't mean sh**,” he says. What that one thing is is up to him and, as Billy Crystal's character learns, it can change in different situations.

Most people agree global warming is a serious issue; perhaps THE issue most urgent in the world. If things don't change and the global temperature rises more than 1.5 degrees Celsius, we are looking at massive catastrophes world-wide.

If that is the case, then addressing global warm...