Is climate change “humanity’s largest challenge”?

That’s what the San Francisco Chronicle claims.

The Chronicle editorializes:

I can think of many other problems that people could tackle and have success with (e.g., the economy, overreaching government, disease, poverty etc.) but for some reason, many have decided that something they have absolutely no control over and no chance of affecting (i.e., the climate) is the biggest challenge. It’s a kind of insanity.