ENGINEERED BY NATURE GRAND CANYON BY MARTHA LONDON CONTENT CONSULTANT KARL KARLSTROM PHD DISTINGUISHED PROFESSOR DEPARTMENT OF EARTH AND PLANETARY SCIENCES UNIVERSITY OF NEW MEXICO Kids Core An imprint of Abdo Publishing abdobooks.com
Visitors enjoy amazing views at the Grand Canyon
CHAPTER 1 STANDING ON THE EDGE Visitors look out over the Grand Canyon Layers of rock stripe the canyon walls The blue sky is bright against the orange and red rock Visitors take pictures They are standing at the edge of the canyon
