Just a few sprinkles and clouds in Kona.

I worked for a company making industrial diamond in thin wafers. You can hold a thin piece of diamond and slice right through an ice cube with very little pressure because the heat is transferred so quickly from your fingers to the cutting edge. It is such a surprising experience.

The picture with the post shows cooling towers emitting water vapor. Not to say there aren't greenhouse gas emissions going on nearby, but the picture doesn't show it.

Surfactants e. g. soap. Sanitation has extended life expectancy dramatically.