As a kid (back in the Jurassic era before calculators, i.e. early 70's) I remember reading a sci-fi story. This came back to me recently in a discussion about young Sci-Fi but I couldn't remember the title. I seem to remember that I read it in some educational context, which I can't nail down.
Here are the elements that stuck in my brain:
A human colony on a planet in an ice-age
Aliens conquered and enslaved the humans. The Aliens were (even drawn) as blue beach balls with tiny cherub wings and childlike human heads on top
The Aliens controlled all sources of heat on the planet. They used "cans" of heat as a method of rationing to control the humans
Of course the story revolved around young people / kids rebelling against the aliens
Even as a kid, I thought this was the stupidest sci-fi story I had read in my young life. I was probably biased because I had just finished Niven's Ringworld.
