Best Selling Books by Roma Gans

Explores the mysteries of bird migration, including theories on how birds find their way and how scientists learn about migration.

Holly Keller has created vivacious new paintings for this favorite Reading Rainbow title about geology. Readers follow two enthusiastic rock hounds around the globe as they add to their collection. Along the way they will learn how sedimentary, metamorphic, and igneous rocks are formed. From the Egyptian pyramids to Roman roads, from the diamond ring on your finger to the pebbles under your feet''rocks are everywhere!

Easy-to-read text explains the meaning of bird sounds.

Describes the water cycle, discusses water pollution, and examines what is being done to protect our essential water supply.

Describes how and why animals shed their feathers, hair, shells, horns etc., with emphasis on the molting of birds.

Describes the various methods of nest-building used by many different birds.

Discusses the feeding habits of birds.

Describes eyes, feet, and feathers in their roles as protective features for sleeping birds.

Describes the general migratory and feeding habits of the hummingbird emphasizing the amount of fuel necessary to sustain the small high-powered body weighing less than a penny.

Describes the characteristics, formation, and uses of various types of crystals.

Explains how icebergs are formed from glaciers, move into the ocean, create hazards to ships, and sometimes melt away.