21.   One professor thought that because of the fear of sexually transmitted diseases, casual violence had replaced casual sex as a campus release.

22.   Professional sports has seen a need to address the dangers of casual sex.

23.   Russians use condoms only half as frequently as Americans during casual sex, a recent survey found.

24.   Sexually transmitted disease is growing worldwide as people increasingly marry at a later age and have more casual premarital sex, according to the United Nations Population Fund.

25.   Some say it is usurping the role of the parent and is encouraging casual sex.

26.   The kids thrash about in a sea of pop cultural junk, cobbling lives out of casual sex and even more casual drug use.

27.   The play is about three educated, well-off slackers who spend hours lounging in a West Side apartment, trafficking in cocaine, casual sex and philosophical banter.

28.   The Roosevelt and Eisenhower exploits are treated as painful but emotionally powerful love affairs, not casual sex.

29.   The survey also shows students are volunteering more, increasingly opposed to abortion and casual sex, and drinking less beer.

30.   They speak of peace and freedom but frown on casual sex.