To be honest, I'm not generally that into science. Kind of odd, since the lowest grade I've made in any of my college science classes was a 94 in Anatomy, which was interesting at points. However, I was far more interested in the Astronomy and Ecology classes that I took.
When it comes to my favorite science though, I have a few worth mentioning. I guess I could separate them into three categories; ones I like to study, ones I like to practice and pseudoscience.
Going with a pseudoscience, I of course have to go with Abnormal Psychology. Not just regular Psychology, which is fine in its own right, but the psychology of things which are considered abnormal. It relates to psychology, in that I am interested in why people think the way they do or why people do the things they do. Abnormal Psychology just goes beyond the study of the brain and goes more into the specific cases of people like serial killers and rapists. Which are minds that far more intrigue me because I despise people who do such things and want to understand where people get about thinking such actions are actually okay.
Then if I'm going with a science that I'd like to practice, it would be Botany. Moreso than discovering the ecosystem, I'm interested in learning the specifics of plants and how they affect things, especially the body. Not just for medical purposes, but knowing what herbs and spices work best with what. In the olden days, I would have been interesting in being a chef or a medical person. Though in these days neither interest me as much as I'd like them to.
As for my favorite science to study, it had to be either Psychology or my last science that interests me, Astronomy. When I grew up, I was always fascinated with things like Greek Mythology, and when I learned that the Gods were based on Roman Gods, which were further based off the planets of the solar system, I was intrigued to learn about the solar system itself. As I learned about these things, I started learning more about the vast expanse of space as a whole and I loved it. Astronomy takes the rules of science as we know them and warps them. Different planets have different laws of physics from our own, for instance. Moreso than that is the potential for what lies beyond what is known. There is so much in the universe, that I can't help but be fascinated by the potential and the effect things in the universe have on other things. As someone who also loves Creative Writing, Astronomy is a really cool medium for ideas.