Tomorrow is Thanksgiving in the United States, a time for gratitude and community. Intangible qualities like these challenge science, since they don't lend themselves as readily to quantifying or to controlled investigation. Much easier for a scientist to tackle topics like tryptophan in turkey--no, that's not what makes you drowsy after dinner--because we have better tools for studying molecules. That doesn't mean gratitude or community aren't real or significant to our lives, just that we need different tools to study … [Read more...] about Science Corner: Prayers and Placebos