Sally M Walker

Describes the physical characteristics, life cycle, behavior, and conservation of rhinos.

Looks at what heat is, and examines how it interacts with different types of matter.

Rocks can be made of many different minerals. By looking at rocks closely, we can tell where they were formed and what conditions they were created in. How do we know these things? And how do we tell different types of rocks apart? Learn about ways to research rocks and what they can teach us about our world.

Text and pictures describe the Earth's caves, including their different types, animal life, and how people explore them.

Describes soil, how it is formed, and why it is studied.

"This stunning meeting of poetic form and luminous artwork transports us out of the bounds of Earth, past a lunar eclipse, beyond the orbiting planets, and into glowing galaxies and twinkling constellations. Sally M. Walker uses her award-winning skill as a writer of nonfiction to explore space through clever haiku, accompanied by narrative explanations of wonders that are out of this world. Illustrator Matthew Trueman imagines the explosive Big Bang...

Introduces glaciers, including how they were formed, how they move, and their importance to the geography and ecology of the world, and discusses ways that we can reduce the deterioration of the glaciers before it is too late.