- Velociraptor, Arnold Ringstad
- Desert habitats
- Weird-but-true facts about U.S. history
- The cycle of photosynthesis, Arnold Ringstad
- What's inside a drone?, Arnold Ringstad
- NASA takes photography into space, by Arnold Ringstad
- Asteroids, meteorites, and comets, Arnold Ringstad
- Dwarf planets, Arnold Ringstad
- The sun, Arnold Ringstad
- How do engineers reuse rockets?
- The intriguing sources of hold your horses and other idioms
- Weird-but-true facts about U.S. presidents
- The solar system, Arnold Ringstad
- Dinosaur myths, busted!
- Portable toilet cleaner
- True stories of animal heroes
- True stories of animals at work
- The shocking stories behind lightning in a bottle and other idioms
- What's inside a remote control?, Arnold Ringstad
- Ufos and aliens, Arnold Ringstad
- Biking
- True stories of animal oddities
- The peculiar stories behind raining cats and dogs and other idioms
- What's inside a digital camera?, Arnold Ringstad
- What's inside a toaster?, Arnold Ringstad
- The first moon landing, Arnold Ringstad and Duchess Harris
- Us air force equipment and vehicles, Arnold Ringstad
- True stories of animal tricks and talents, Arnold Ringstad
- The compelling histories of long arm of the law and other idioms
- The unbelievable origins of snake oil and other idioms
- What's inside a keyboard?, Arnold Ringstad
- Allosaurus, Arnold Ringstad