A look at a common food chain in a South American rainforest, introducing the cacao tree that starts the chain, the jaguar that sits atop the chain, and various animals in between.
A look at a common food chain in the Pacific Ocean, introducing the plankton that starts the chain, the killer whale that sits atop the chain, and various animals in between.
A look at a common food chain in a North American desert, introducing the mesquite tree that starts the chain, the coyote that sits atop the chain, and various animals in between.
A look at a common food chain in the Rocky Mountains, introducing the ponderosa pine tree that starts the chain, the mountain lion that sits atop the chain, and various animals in between.
A look at a common food chain in the Arctic tundra, introducing the Arctic willow that starts the chain, the wolf that sits atop the chain, and various animals in between.
An account of espionage during the modern age, including famous spies such as Dayna Williamson Baer, covert missions, and technologies that influence the course of present-day conflicts.
A helpful guide for understanding the mathematical concepts and real-world applications of measurements, including classroom tips, common terms such as volume, and exercises to encourage hands-on practice.
A narration of the origins, advancements, and future of the formal sciences, including mathematics and computer science, and the ways in which scientists utilize the scientific method to explore questions.
A narration of the origins, advancements, and future of the physical sciences, including chemistry and physics, and the ways in which scientists utilize the scientific method to explore questions.
A narration of the origins, advancements, and future of the life sciences, including botany and zoology, and the ways in which scientists utilize the scientific method to explore questions.
A narration of the origins, advancements, and future of the applied sciences, including engineering and medicine, and the ways in which scientists utilize the scientific method to explore questions.
A narration of the origins, advancements, and future of the earth and space sciences, including astronomy and geology, and the ways in which scientists utilize the scientific method to explore questions.
A narration of the origins, advancements, and future of the social sciences, including anthropology and psychology, and the ways in which scientists utilize the scientific method to explore questions.
An in-depth look at the people and policies behind the government agency known as NASA, from its founding in 1958 to the controversies and challenges it faces today.
An exploration of Grand Teton National Park, including how its mountainous landscape was formed, its history of preservation, and tourist attractions such as the waterfall known as Hidden Falls.
An in-depth look at the people and policies behind the government agency known as the EPA, from its founding in 1970 to the controversies and challenges it faces today.
An exploration of Rocky Mountain National Park, including how its mountainous landscape was formed, its history of preservation, and tourist attractions such as the towering summit of Longs Peak.
An exploration of Big Bend National Park, including how its desert canyons were formed, its history of preservation, and tourist attractions such as the hiking route called Chimneys Trail.
An exploration of Badlands National Park, including how its carved landscape was formed, its history of preservation, and tourist attractions such as the rock formation known as the Badlands Wall.
An exploration of the life cycle and life span of penguins, using up-close photographs and step-by-step text to follow a penguin’s growth process from egg to chick to mature penguin.
A look at meerkats, including their habitats, physical characteristics such as their tails, behaviors, relationships with humans, and their stable status in the world today.
A look at the origins, leaders, growth, and innovations of AT&T, the telecommunications company that was founded in 1877 and today provides services to hundreds of millions of subscribers worldwide.
An exploration of the life cycle and life span of koalas, using up-close photographs and step-by-step text to follow a koala’s growth process from embryo to joey to mature koala.
An exploration of the life cycle and life span of beans, using up-close photographs and step-by-step text to follow a bean’s growth process from seed to seedling to mature plant.
An exploration of the life cycle and life span of corn, using up-close photographs and step-by-step text to follow a corn plant’s growth process from seed to seedling to mature plant.
