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Colorful gems sparkle and shine. Where do these precious stones come from? Learn about gemology, the science and study of gems, with this informative book created in collaboration with the Smithsonian Institution. It features a hands-on STEAM challenge that is perfect...
The Arctic ecosystem is diverse, fascinating, and special.The animals and people who live there have adapted to the icy landscape. But because the Earth's temperature is warming, the polar ice in the Arctic is melting. Discover why it's so important to save the Arctic,...
California has a long, storied past. There was a myth that it was an island. Spanish explorers thought they would find cities paved in gold there. When they did not, they left for over 100 years. It’s hard to imagine that California’s early explorers did not see its...
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