Babies are a very convenient demographic to stand up for, since they can't make demands. Women's bodies are their own - if women want to get an abortion, that is their choice, and it is disgusting that people feel they should be able to tell them what to do with their wombs.

Rhythm of War has a bit more focus on technical intricacies of the magic system. Navani is one of the primary viewpoint characters in it

Fahrenheit's 0 is the freezing point of water - salt water that is. Not that I think it's better, just that there was some thought put into it.

In the context of Iroh's character it makes complete sense though. He had a... "grand" life as a general in the first nation, but realised it was not what he wanted when his son died in the army. At least, if I remember correctly.