Seymour Simon has written more than 150 award-winning science books about animals, anatomy, astronomy, earth science, and vehicles! Named after the Roman god of war, Mars has fascinated people for thousands of years. Did you know that . . .
Seymour Simon has written more than 150 award-winning science books about animals, anatomy, astronomy, earth science, and vehicles! Named after the Roman god of war, Mars has fascinated people for thousands of years. Did you know that . . .