Sally M Walker

The members of the Vowel family have a hard time talking until their children, Alan, Ellen, Iris, Otto, and Ursula, are born, and when one of them gets lost one day, it takes their Aunt Cyndy to fix the problem.

Introduces Antarctica, presenting the history of its exploration and the current research efforts underway to investigate its geography, climate, and fossils of the past, and monitor the effects of global warming on its glaciers.

"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...

Traces the history of the Mason-Dixon Line as reflected by family feuds, exploration, scientific advancement and the cultural conflicts between America's northern and southern states.

Fossils give us a window to the past. Water, sediments, and pressure work together over time to preserve the shape of things that lived long ago. Studying these ancient plants and animals tells us more about our own existence. Have you ever searched for fossils? Unearth some in this book.

In this Early Bird title, readers learn about the physical characteristics, habitat, and behavior of the mosquito.

This book reports on the work of forensic scientists who are excavating grave sites in James Fort, in Jamestown, Virginia, to understand the people who lived in the Chesapeake Bay area in the 1600s and 1700s.