Natalie Humphrey

Goliath Bird-Eating Spiders (Nightmare Bugs!)

I Spot Stars (I Spot Shapes!)

Giant Centipedes (Nightmare Bugs!)

Women's Suffrage (U.S. History in Review)

Making a Car (World of Engineering)

Building a Plane (World of Engineering)

Making a Computer (World of Engineering)

Building a Ship (World of Engineering)

Tiburón Ballena: Pez Enorme (Whale Shark: Enormous Fish) (Los Animales Más Grandes del Mundo (World's Biggest Animals))

Building a Skyscraper (World of Engineering)

Giant Weta: Mammoth Insect (World's Biggest Animals)

Weta Gigante: Insecto Gigantesco (Giant Weta: Mammoth Insect) (Los Animales Más Grandes del Mundo (World's Biggest Animals))

Building a Bridge (World of Engineering)

Learn about Mercury! (Planets in Our Solar System)

Learn about Saturn! (Planets in Our Solar System)

Learn about Earth! (Planets in Our Solar System)

Learn about Mars! (Planets in Our Solar System)

Learn about Jupiter! (Planets in Our Solar System)

Saltwater Crocodile: Giant Reptile (World's Biggest Animals)

Cocodrilo de Agua Salada: Reptil Gigante (Saltwater Crocodile: Giant Reptile) (Los Animales Más Grandes del Mundo (World's Biggest Animals))

Salamandra Gigante China: Anfibio Grandísimo (Chinese Giant Salamander: Huge Amphibian) (Los Animales Más Grandes del Mundo (World's Biggest Animals))

Cows Fart! (Nature's Grossest)

Ballena Azul: Mamífero Masivo (Blue Whale: Massive Mammal) (Los Animales Más Grandes del Mundo (World's Biggest Animals))

Avestruz: Ave Colosal (Ostrich: Colossal Bird) (Los Animales Más Grandes del Mundo (World's Biggest Animals))