A study found that when it comes to career choices, men prefer things and women prefer people.If you thought it was sexist to assume that girls aren't good at science, maybe you should think again (though stereotypes are dangerous and there are certainly many, many exceptions). A recent study in the journal Hormones and Behavior found that genetics play a key role in the career choices we make. In short, men become astronauts and women prefer nursing because of our biological nature, not environmental factors. In our society, males are more likely to work in fields dealing with "things" like...