Long before she became known as the Cactus Queen, Minerva Hamilton Hoyt found solace in the unexpected beauty of the Mojave Desert in California. She loved the jackrabbits and coyotes, the prickly cacti, and especially the weird, spiky Joshua trees. However, in the 1920s, hardly anyone else felt the same way. The desert was being thoughtlessly destroyed by anyone and everyone. Minerva knew she needed to bring attention to the problem. With the help...

As the Ice Age came to an end, North America lost a stunning variety of animals. Mammoths, mastodon, llamas, ground-dwelling sloths the size of elephants, beavers the size of bears, pronghorn antelope the size of poodles, and carnivores to chase them--sabertooth cats, dire wolves, American lions and cheetahs; these and many more were gone by 10,000 years ago. Giant Sloths and Sabertooth Cats surveys all these animals, with a particular focus on the...

Trapped! The American colonies are gripped by the Revolutionary War, and you have been cornered by the British. From cat-and-mouse battlefield confrontations to crowded prison ships, you'll do anything to stay out of their clutches. Will you help the Continental Army escape from Long Island? Or will you brave icy waters to swim from a floating prison? Every decision can be the difference between life and death! An interactive Revolutionary War adventure...

"Atomic Steppe tells the untold true story of how the obscure country of Kazakhstan said no to the most powerful weapons in human history. With the fall of the Soviet Union, the marginalized Central Asian republic suddenly found itself with the world's fourth largest nuclear arsenal on its territory. Would it give up these fire-ready weapons--or try to become a Central Asian North Korea? This book takes us inside Kazakhstan's extraordinary and little-known...