2 Ergebnisse.

Twelve year-old Riley has always been inventive. But when intruders snatch his parents from their space cargo ship, Riley must use that cleverness, some of his inventions, and what little confidence he has to plan their rescue. Following clues left by his father, and with the help of friends he meets along the way, he embarks on a journey across an unfamiliar and treacherous world to find them. His journey gets complicated though, when learns ...

Few of us think twice about driving on roads. Yet the very presence of roads and the act of driving on them can impact the ecological infrastructure that supports an animal¿s daily life. What chance does a turtle have of successfully laying its eggs when it needs to traverse a busy highway? Is it realistic to expect small mammals to breed when an interstate thoroughfare subdivides their population? These are the sorts of challenges faced by sm...