Science

Much more than a simple chart, the periodic table of elements identifies and categorizes chemical elements. But what exactly is an element? What do...

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

How does catnip work its magic on cats? Why do the ice cubes in my freezer often develop stalagmite-like spikes? Did any dinosaurs have poisonous s...

Before the science of pharmacology was confined to the laboratory, all medicines were remedies made from plant materials. Healers—from the Neolithi...

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...

When were the first fireworks made? How many satellites have been sent into space? And what does the word kimono mean? Find out the answers to thes...

Publisher’s Note: A Curious Collection of Peculiar Creatures was previously published in Australia as The Illustrated Encyclopaedia of Ugly Animals...

Kids love stuff that's gross. From the liquids, solids, and gases--especially the gases!--or their own bodies to the creepy, crawly, slimy, slither...

Fact-filled, fun-filled, as interesting to parents as it is to kids, the How Come? series is the trusted source for lively, clear answers to kids’ ...