- Genetic engineeringRon Fridell
- SpyingRon Fridell
- Dictatorship (Political Systems of the World)Ron Fridell
- Decoding LifeRon Fridell
- DNA fingerprintingRon Fridell
- Spy technologyRon Fridell
- The War On HungerRon Fridell
- Life Cycle of a Silkworm (Life Cycle of a...)Ron Fridell
- Protecting Earth's water supplyRon Fridell
- Global warmingRon Fridell
- Military Technology (Cool Science)Ron Fridell
- Life cycle of a-- pumpkinRon Fridell
- Forensic ScienceRon Fridell
