Questions concerning moral problems caused by the life-sciences and concerning the adequate methods and instruments to solve these are timely and urgent; especially in the face of intense debates on the acceptability of research on human embryonic stem cells and preimplantation diagnostics, to name only two applications developed from research on the life-sciences. Unfortunately, the constant and accusing demand that life-scientists must behave morally does not give us a clue on how ethics may help in establishing guidelines for moral behaviour. In this heated situation the foundation of ethics-committees seems to be the motto of the day. But instead of functioning as necessary and fruitful scientific advisory boards, these committees run the risk of being misused as a fashionable (and soon forgotten) weapon in the battle for political opinion-leadership. In the following article, the view is defended that ethics is a scientific enterprise and has an important role to play in political decision making on life-sciences issues.