Planet Earth formed over 4 billion years ago. As Earth cooled over millions of years, an ocean formed. Scientists believe this ocean once covered the entire planet. Discover the changes our… More →
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Life on Ancient Earth
Get ready to come face to face with prehistoric creates as you explore Life on Ancient Earth . This exciting series provides important Earth Science information in a fun, visually dynamic way.
Titles
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Landscapes Long Ago
Powerful forces have shaped Earth's landscapes over billions of years. Supercontinents have formed and then broken apart over and over. Tectonic plates have collided and formed mountains. Ice More →
Sixty-five million years ago, dinosaurs were wiped off the face of the Earth. Without the danger of being eaten by those scaly giants, mammals grew to enormous sizes. Take a closer look at… More →
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Prehistoric Plants
Plants have not always existed on Earth. The first plants appeared in the ocean and were much like algae. It took millions of years for them to evolve into plants with leaves and branches.… More →
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Sea Monsters
Millions of years ago, giant predators ruled the oceans. Some weighed as much as 70 tons. Others shredded their prey with 7-inch-long teeth. Dive into this book and learn more about these… More →
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Age of the Dinosaurs
The worst mass-extinction event happened on Earth 252 million years ago. Three-quarters of all life on Earth was wiped out. The result? The rise of the dinosaurs. A species that evolved into… More →