re: #577 Ojoe

It probably takes more energy than not to get an ice age going because all that precipitation has to be boiled off the oceans (with an equivalent amount of energy - you are vaporizing the water) and then the water vapor has to be carried on the wind to northern & southern places, and it takes energy to blow the wind.

I would bet that “global differential warming” might just be something that could lead into an ice age.

Huh? The projections I’ve seen have all major parts of the earth getting warmer, but the poles, which were originally very cold, warm more than do the tropics.

That would lead to less wind, if anything, because winds are linked to temperature differentials. The energy for our winds comes from the sun, which heats some places more than it heats others. Where you get an ice age from that beats me. You sure you didn’t confuse a fancy phrase with a real idea?