Deserts

by Anita Ganeri

Published 1 September 1993

Rain Forests

by Anita Ganeri and Jakki Wood

Published 1 September 1993

Into Space

by Anita Ganeri and Jakki Wood

Published 1 September 1993
Harry and Ralph visit the moon, the planets, and a comet in their spaceship and discuss the stars, the Milky Way, and the possibility of life on other planets.

Under the Sea

by Kate Petty and Anita Ganeri

Published 1 September 1993
Harry and Ralph explore oceans, their tides, currents, mountains, trenches, and animal life.