Marvel at some of the most amazing feats of engineering ever completed.

In the face of injustice, people band together to work for change, and through their influence, what was once unthinkable becomes common. This title traces the history of the green movement in the United States, including the key players, watershed moments, and legislative battles that have driven social change. Iconic images and informative sidebars accompany compelling text that follows the movement from the work of nineteenth-century conservationists...

Eleven-year-old Tania, whose parents are the producers of a ghost-hunter reality television show, has the ability to communicate with ghosts. While filming at an old hotel in Colorado she and her older brother Jon discover a ghost bride who wanders the hotel searching for her husband who went missing a century ago.

Jon and Tania--who can see and communicate with ghosts--journey down the Mississippi River on an antique riverboat in search of ghosts, but the spirit of a pyromaniac, riverboat captain proves dangerous to the siblings and the crew.