Because that's kind of the story of my life.
I get asked a lot about trying to juggle a career in science (or graduate school) while still keeping up with art as either a job or a serious hobby. So I thought I'd make a post that basically sums up my thoughts on both.
First, I am not a professional artist, and I'm not a professional scientist. Yes, I have a PhD in biology, but I don't currently work in research (and probably never will again). What I currently do is teach science to high school students and teachers. I work in science outreach at a large university, and it's a good compromise for a lazy jerk like me.
See, science and art are similar in one way (okay, probably more than one way, but I'm trying to make a point here...): you really have to love them to do either as your professional career. Really love it. Art people, you know what I'm talkin' about! It is hard to convince yourself to pick up a pencil and draw when you don't love it. And when you're your own boss, sometimes the only thing getting you moving in the morning is your own boot in your butt (that, or the fact that the rent is due). Well, science is the same way: you determine your own success. There's no 9-5 job in science. There is the constant struggle to get funding, to publish more and better science, to come up with better questions. If you don't absolutely love it, you will absolutely hate it. And you won't get far.
Let's say you're thinking of a career in science... There are two basic trajectories you can take beyond the particular subject you might be interested in studying: basic science or applied science. Don't let the name fool you - basic science rocks! This is what you do if you're working in academia: paleontologists, evolutionary biologists, botanists, theoretical physicists, virologists, ecologists, typical mad scientists, etc. Sure, you might be asking questions and doing research on subjects that some people think don't matter, but you're doing stuff that interests you. That's not to say your work won't have applications for the 'real world', they just won't generally be the main focus of your research. Basic researchers work at universities. They tend to teach a lot (depending on how many grants they have and how big they are), and they get to run a lab full of PostDocs, grad students, and undergraduates. It pays badly at first, and then very well. And there's the struggle to get tenure, which can gut-wrenching.
Applied scientists work in government labs, or in the biotech industry. I don't have much experience in this area. It pays better, generally, and sometimes it's more like a 9-5 job. But, again, I don't know much about it.
Either way, the path to each of these careers starts in graduate school. So what's graduate school in the sciences like? Well, it's nothing at all like your undergraduate degree. First, you will not take very many classes, which was great for me because I hate useless class work. Second, if you do take classes, they will most likely be designed for graduate students - e.g., small panel-type discussion groups. Third, you will probably teach. A lot. And you will have almost no idea what you're doing at first. Last, you are responsible for your own project (that you either come up with on your own, or get assigned to you), so you need to be prepared to manage your time. And you will need to publish your work. There's a lot of writing in grad school. Yes, even in the sciences.
So how do you get into graduate school? The most important thing to keep in mind when applying to graduate schools for the sciences is that you're not looking at a particular school so much, but a particular professor who is working on projects that you find interesting. There's some leeway, but generally you'll have more freedom as a grad student to choose your own projects if you enter a lab in a basic science department. And don't 'just apply': you've got to contact the professor, talk to him/her, visit the lab, to have the best shot. The most important thing to keep in mind when applying to graduate schools for the sciences is that you're not looking at a particular school so much, but a particular professor who is working on projects that you find interesting.
Anyway, I love science and I love doing research, but I found that the grant writing and the constant competition for money and to publish and to be the best just wasn't for me. You've got to be a little insane to get really, really good in science. Maybe you have to give up a little too much of your life. I think I'm happy where I am right now. And I can still live vicariously through my husband, who's a full-time scientist.
So the art part... You will still have time to do the things that you love. I made quite a lot of (really bad) art while I was in graduate school. I think if I wanted to push myself now I could probably build a career in art. But I don't. Because I know I would face the same problems again: to get really good, you've got to give up a lot. You've got to be able to pick up that pencil and draw even when you hate the subject (or are just mildly bored by it, which could be worse). And I know I don't want to do that. Maybe that makes me a pussy (probably), but I don't care (I care a little, but not enough to do anything about it).
Well, that was rambly... Time to get back to work!