You may use any of these topics. Most of them were devised by fellow students. My suggestion is that you devise your own topic or an angle on one of these topics that will lend fresh and current appeal to yourself and the class.
Stem cell research
Genetic modification
Cloning
Freezing embryos
Medicinal Marijuana
Artificial insemination
Placebos
Abortion
Organ donation
Life support
Euthanasia
Medical experiments on animals
Birth control
Bodily modification
Equal opportunity
Discrimination in the workplace or marketplace
Separation of Church and State
Fines at Evangel University
Adoption by homosexual couples
Can we justify unethical behavior in government
Gun control
Capital punishment
Animal rights
Gay marriage
Homeland security
Immigration & border patrol
Genocide
Involvement in world conflict
War
Environmentalism
Nuclear war
Killing in war
Bad habits: smoking, chewing tobacco and drinking.
Gambling
Pre-marital sex
Lying
Rating systems for movies
Gluttony & eating
Performance enhancement drugs
Wage equity
Public funding for private arenas
Kazaa, licensing and digital copyrights
Bit Torrent
Microsoft Monopoly and unfair business practices
Lawsuit as a method of market dominance
Morality in the Church
Drunkenness and the Bible
Clubbing and dancing for the Lord
Pornography and marriage
Pornography
Child Pornography
Date Rape
Assisted suicide
Cheating
Death row
Speeding in traffic
Legalization of marijuana
Legalization of hard drugs
Who's to blame for the War on Drugs?
Is capitalism the best economic system morally
Dealing with the poor
Welfare - help or hindrance