Earth Threat #1: Poverty (February 24, 2008)
Earth Threat #2: Infectious Disease (March 27, 2008)
Earth Threat #3: Environmental Degradation (July 7, 2007)
Earth Threat #4: Inter-State Conflict (July 7, 2007)
Earth Threat #5: Civil War (July 7, 2007)
Earth Threat #6: Genocide (July 7, 2007)
Earth Threat #7: Other Atrocities (June 22, 2008)
Earth Threat #8: Proliferation (July 23, 2007)
Earth Threat #9: Terrorism (July 7, 2007)
Earth Threat #10: Transnational Crime (July 7, 2007)