Astrophysics for Young People in a Hurry

How We Got to Now: Six Innovations That Made the Modern World

Who Was Charles Darwin?

What Is the Story of the Headless Horseman?

What Do We Know About the Mystery of D. B. Cooper?

Genius Physicist Albert Einstein

What Do We Know About the Kraken?

The Woman Who Split the Atom: The Life of Lise Meitner

What Do We Know About the Chupacabra?

Guidebook to the Unexplained

What Do We Know About the Winchester House?

What Do We Know About Alien Abduction?

What Do We Know About the Nazca Lines?

What Do We Know About the Roswell Incident?

Cutting-Edge Space Tourism

Where Are the Constellations?

Where Is Our Solar System?

Growing Up Muslim: Understanding the Beliefs and Practices of Islam

The Octopus Scientists