Britannica Digital Learning

World War II explores the secrets of World War II. Throughout the war, both sides made great efforts to uncover enemy plans and keep their own secrets hidden. They engaged in secret operations, plots, and missions, always attempting to wrongfoot the enemy or take them by surprise.

In Secrets of Flight, you will find out how birds fly, how jet engines work, and why some planes fly so fast.

Who Split the Atom? explores the ways in which scientists uncovered the secrets of atoms—the tiny particles of matter that make up our world.

World War I explores the secrets of World War I. As in all wars, each side needed to keep secrets from the enemy. At the same time, they tried to discover the enemy's secrets, using spies and code-breakers.

Who Discovered Natural Selection? explains how scientists worked out the way in which living things evolve.

Tsunami! describes how earthquakes and volcanoes cause deadly waves, the devastation they inflict on communities and the environment, and why they are so difficult to predict.

Why Are the Rain Forests Being Destroyed? looks at the threats to the world's rain forests from the logging and mining industries, power and oil companies, and from ranchers and farmers.

In Secrets of Pollution and Conservation, you will find out how human activity has polluted the air, land, and sea, and what steps people are taking to clean up the planet.

Caring for ducks and the benefits we get from these little farm animals is the subject of this engaging book.

This book discusses the history of American wild horses, what they look like, and facts about owning one.