45 books • 11 series
El Sol (Espacio Increíble)
La Luna (Espacio Increíble)
Asteroids (Amazing Space)
The Sun (Amazing Space)
The Moon (Amazing Space)
Las Galaxias (Espacio Increíble)
Los Asteroides (Espacio Increíble)
Galaxies (Amazing Space)
Hip-Hop
Ant Colonies
La Gran Muralla China
Stonehenge
Great Wall of China
La Gran Muralla China (Maravillas Asombrosas)
Good Eating
Detecting Cancer
Detecting Infectious Disease
Sled Dogs (Dogs at Work)
Therapy Dogs (Dogs at Work)
The NBA Finals (Major Sports Events)
The FIFA World Cup (Major Sports Events)
Search and Rescue Dogs (Dogs at Work)
Inventing Vaccines
Stubborn as a Mule