ST. LOUIS, Missouri (Reuters) - American scientists fighting back against creationism, intelligent design and other theories that seek to deny or downgrade the importance of evolution have recruited unlikely allies -- the clergy.And they have taken their battle to a new level, trying to educate high school and even elementary school teachers on how to hold their own against parents and school boards who want to mix religion with science.While they feel they have won the latest round against efforts to bring God into the classroom, the scientists say they have little doubt their opponents are merely regrouping."It's time to...