Bacteria and viruses

By Kara Rogers

This book explores today's understanding of the harmful effects of bacteria and viruses, what roles bacteria and viruses play in diseases, and how the fields of microbiology and biochemistry become...

The Britannica guide to particle physics

By Erik Gregersen

The Britannica guide to the atom

By Erik Gregersen

The history of southern Africa

By Amy McKenna

The history of southern Africa is marked by both the convergence and divergence of diverse cultures. Clashes between European settlers and indigenous peoples throughout this section of the continen...

Saudi Arabia and Yemen

By Laura Etheredge

While they share a border and a rich heritage, Saudi Arabia and Yemen are also a study in contrasts. Where Saudi Arabia has a largely urban population that enjoys the benefits of its thriving econo...

Thinkers and theories in ethics

By Brian Duignan

Perspectives on moral behavior and ethical action are wide-ranging, and often involve divergent standards and approaches that produce ambiguous conclusions--yet we still arrive at universals. Echoe...

Advances in democracy

By Heather M. Campbell

Astronomy

By Sherman Hollar

Fathoming the boundlessness of space and the universe, we are immediately filled with curiosity about our own origins and wonder about the objects, life forms, and matter that populate the cosmos....

Ancient Rome

By Britannica Educational Publishing

The innovation and progress that characterize modernity often eclipse the accomplishments of ages past. However, close examination of ancient civilizations reveals a sophistication in both thought...

The history plays and poems of William Shakespeare

By Kathleen Kuiper

Before Shakespeare, few dramatists had used historical figures as characters in a play, or actual historical events as elements of a plot. Likewise, the Bard was a pioneer of the sonnet, which he t...