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Kids (and adults) will love this irresistible "learning playground" filled with skill-building and oh-so-much fun! What a way to learn! Understand why the model for the U.S. Navy's new research-and-rescue submarine isn't sleek like a race car, but is cube-shaped like a boxfish! Use one method of setting reasonable quotas to prevent over-fishing. Discover the big difference between melting ice at the Arctic and at the Antarctic a fascinating, eye-opening experiment.