• Acid Rain
• Age  Discrimination
• AIDS
• Attention Deficit  Disorder
• Child Labor
• Child Neglect
• Clear Cutting/logging
• Crime
• Decline of the Family  Farm
• Demographic Changes
• Drug Dealing
• Endangered Species
• Energy Consumption
• Environmental  Destruction
• Famine in Africa
• Gun  Laws
• Hate Crime
• Hunger in California
• Immigration
• Infant Mortality
• Juvenile Crime
• Malnutrition/Obesity
• National Debt
• Natural Disasters
• Nuclear Arms
• Oil  Spills
• Poverty
• Preserving Historic  Sites
• Prisons and  Rehabilitation
• Racial Discrimination
• Religious Minorities
• Restoring Mining Sites
• Teenage Pregnancy
• Terrorism
• Toxic Waste Disposal
• Traffic/Commuting

For  more topics see
http://www.ncpa.org/pi/internat/intdex11.html