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You've been rock hunting in a mine for hours when something sparkly catches your eye. As you clear the dirt from around the crystal, you know your long hunt was worth it. You're …

You stare at the side of a rock wall near the ocean. Suddenly, you notice a spiral outline in the rock. You found an ammonite fossil You are filled with awe as you think about how …

Could aliens from outer space really exist? And have they visited Earth? Readers will be captivated by exciting tales of alien encounters while also learning the facts about each …

You're rock hunting along a lakeshore with your eyes glued to the ground. A see-through rock lights up in the sunlight. Your heart races as you pick up the rock. It has beautiful …

Stock cars zoom around racetracks with power and speed. But these vehicles can be made even faster and cooler, and readers will love finding out how. This high-interest book's …

Soon after the Japanese attacked Pearl Harbor on December 7, 1941, they also attacked U.S. military installations in the Philippines. For the army and navy nurses stationed there, …