1.   And because sperm now can be extracted after death, doctors must address the ethical questions raised by the lack of permission.

2.   Apart from the ethical questions, the costs of these measures are disproportionate to any public health benefits.

3.   At the heart of all these issues lie ethical questions.

4.   But a larger ethical question hung in the thick, tropical air.

5.   Occasionally - leaving any ethical questions aside - taped evidence can help to settle a point in dispute.

6.   The use of animals in scientific tests raises difficult ethical questions.

7.   This area of medical research poses serious ethical questions that doctors alone cannot answer.

8.   And despite what the public may believe, Fish said, there was actually far less attention to ethical questions in his early years in the House.

9.   And it raises brand new ethical questions and debates.

10.   And his personal and political ties to the timber industry have provided his opponents with the ammunition to raise a thicket of ethical questions.