- Can you see the wind?, by Allan Fowler
- Life in a tide pool, by Allan Fowler
- The wonder of a waterfall, by Allan Fowler
- Life in a wetland, by Allan Fowler
- Raccoons, by Allan Fowler ; consultants, Linda Cornwell ... [and others]
- It could still be a leaf, by Allan Fowler
- Living in a rain forest, by Allan Fowler
- How do you know it's fall?, by Allan Fowler
- North America, by Allan Fowler
- Simple machines, by Allan Fowler
- Horns and antlers, by Allan Fowler
- It could still be a bird, by Allan Fowler
- They could still be mountains, by Allan Fowler
- Spiders are not insects, by Allan Fowler
- When a storm comes up, by Allan Fowler
- It could still be a dog, by Allan Fowler
- Living in a desert, by Allan Fowler
- Energy from the sun, by Allan Fowler
- Taking root, by Allan Fowler
- What magnets can do, by Allan Fowler
- A snail's pace, by Allan Fowler
- Shellfish aren't fish, by Allan Fowler
- It could still be a tree, by Allan Fowler
- From seed to plant, by Allan Fowler ; consultant, Janann V. Jenner
- It could still be a fish, by Allan Fowler
- Gentle gorillas and other apes, by Allan Fowler
- Animals under the ground, by Allan Fowler ; consultants, Linda Cornwell, Fay Robinson
- It's a good thing there are insects, by Allan Fowler ; images supplied by VALAN Photos and Jeffrey L. Rotman ; consultants, Robert L. Hillerich, Mary Nalbandian
- Living near the sea, by Allan Fowler ; consultant, Linda Cornwell
- Mirror, mirror, by Allan Fowler
- Friendly dolphins, by Allan Fowler
- Icebergs, ice caps, and glaciers, by Allan Fowler
- Arms and legs and other limbs, by Allan Fowler
- The best way to see a shark, by Allan Fowler
- South America, by Allan Fowler
- Australia, by Allan Fowler
- It could still be a flower, by Allan Fowler
- All along the river, by Allan Fowler
- These birds can't fly, by Allan Fowler
- It could still be a mammal, by Allan Fowler
- When you look up at the moon, by Allan Fowler
- Antarctica, by Allan Fowler
- All the colors of the rainbow, by Allan Fowler
- Plants that eat animals, by Allan Fowler
- Really big cats, by Allan Fowler ; consultants, Linda Cornwell, Sharyn Fenwick
- Thanks to cows, by Allan Fowler
- It could still be coral, by Allan Fowler
- Telling tails, by Allan Fowler
- Our living forests, by Allan Fowler
- Gator or croc?, by Allan Fowler