Sally M Walker

"When Harry Colebourn saw a baby bear at a train station, he knew he could care for it. Harry was a veterinarian. But he was also a soldier in training during World War I. Harry named the bear Winnie, short for Winnipeg, his company's home town, and he brought her along to the military camp in England. Winnie followed Harry everywhere and slept under his cot every night. Before long, she became the regiment's much-loved mascot. But who could care...

Discusses the processes used by scientists to discern the identity of the Kennewick Man and what this nine thousand-year-old skeleton revealed about the arrival of humans in North America.

Describes how fossils are formed and where they are found.

The worst maritime disaster in American history wasn't the Titanic. It was the steamboat Sultana on the Mississippi River and it could have been prevented.

Electricity powers lights, computers, and television sets. But have you seen how electricity can make objects stick together? Or make other objects pull apart? Now you can! Explore electricity with the fun experiments you'll find in this book. This series sheds light on a key science question; How Does Energy Work? Hands-on experiments, interesting photos, and useful diagrams will help you find the answer!

Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments.

An introduction to the physical characteristics, habits, and natural environment of the common and the pygmy hippopotamus.

Henry Brown copes with slavery by singing, but after his wife and children are sold away he is left with only his freedom song, which gives him strength when friends put him in a box and mail him to a free state.

"The story of the near-extinction and recovery of the American Chestnut tree."-- American Chestnut trees were once plentiful in North America's eastern forests. They towered up to one hundred feet tall, providing food and shelter for people and animals alike. To many, life without the chestnut was unimaginable - until disaster struck in the early 1900s. What began in the bark of a few trees soon became an unstoppable killing force, traveling across...