Wind energy

By Amy Hansen

Nuclear Energy: Amazing Atoms

By Amy S Hansen

Nuclear energy

By Amy Hansen

This fact-packed book offers a simple, age-appropriate explanation of nuclear energy, discusses fission and fusion, and explores the pros and cons of this important energy source. A timeline is inc...

Geothermal energy

By Amy Hansen

Learn about the sources, harnessing, and workings of geothermal energy, and what the future holds for this reliable renewable energy source.

Bugs and bugsicles

By Amy Hansen

Every fall, insects disappear. And every spring, they return. Where do they go? The dragonfly dies, leaving its young safe in the muddy bottom of a stream. The monarch butterfly sails the air to dr...

Hunt for the Tomato Killer

By Amy Hansen

What Is It Made Of

By Amy S. Hansen

Solid or Liquid

By Amy S. Hansen

How Do We Stay on Earth First Graphics Science Mysteries Paperback

By

How Do We Stay on Earth a Gravity Mystery

By Amy Hansen