Anyone interested in becoming a professional umpire and becoming eligible to work in the minor leagues must attend one of the two umpire schools sanctioned by Major League Baseball.
Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.
Given the fact that most religions share basic values, it is most unfortunate that religious people can be played off against each other so easily. One possible reason for this may be that people do not know enough about other people's beliefs.