1.   It is as if within the wider panorama particular topics become a focus of especial attention.

2.   Why had such a research topic now become acceptable?

3.   And during one panel discussion the topic even became a bone of contention.

4.   But he soon became interested in optics and quantum mechanics, and those topics became the main focus of his research career.

5.   In addition to personal finance magazines, for which retirement topics have become a monthly staple, there are an increasing number of books on senior subjects.

6.   In recent weeks, the topic has become the focus of sharp debate in the presidential race.

7.   Meanwhile, the topic has become so hot in Washington that even the drug industry has ceded ground.

8.   Some chief privacy officers will work with lawmakers to help design privacy legislation now that the topic has become a major issue in Congress.

9.   The topic became a daily question by the media.

10.   The topic becomes particularly germane whenever observers start noting his place in the NFL record books.