Books

Pristine diamonds, radiant rubies and sapphires, and other gorgeous gems captivate us with their extraordinary beauty and brilliance. But beyond th...

Were there really giant sloths? Are sponges animals or plants? Why can’t dogs be vegetarians? This deck asks the questions about life on Earth that...

People have been inventing constellations—shapes made by mentally connecting the astral dots—for at least 6,000 years. Celestial landmarks that pro...

Why is the South Pole colder than the North Pole? Is hippo sweat really pink? What causes a meteor shower? In this intriguing deck of cards, the Ex...

How do you tell a badger’s track from a porcupine’s, or a red-headed woodpecker’s from a red-tailed hawk’s? It might behoove you to know if those t...

The Highest, Deepest, Widest, Smallest, Heaviest, and Fastest Places and Living ThingsNot one for mediocrity, Mother Nature frequently pushes the e...