Ten-year-old Maxine is determined to become a famous inventor so she can take care of her younger brother's heart condition, and she convinces a troubled classmate to help her.
You are going to Mars. You will be the first human to visit another planet.An up-to-the-minute look at space travel to Mars with photographs from the Viking spacecraft and illustrations by Caldecott
Preserved in ice for over half a millenium, her body holds clues to understanding an ancient culture. In this companion book to his award-winning Frozen Man, author David Getz gives young readers an u
When an archaeologist examines a body found frozen in the Austrian Alps, he learns something extraordinary. The well-preserved body-- and the tools and clothing found at the site-- indicates that the
It was the worst epidemic in this country's history, and the search for its cause is still one of science's most urgent quests.It was 1918, the last year of World War 1. Thousands of men lived in the