Introduces readers to rocks and minerals, describing how they are created, what they can be used for, and their different forms and types.

"Under the canopy of the rainforest, hundreds of animals make their homes--from the slender parrot snake to the colorful poison dart frog. But up in the trees hides a whole other world, where toucans and pale-billed woodpeckers chatter and call, capuchin monkeys swing from the vines, and sleek-furred jaguars rule the night. In this exuberant book, discover the wonder and activity that lie hidden among the roots, above the winding rivers ... and under...

"In this tender, beautiful letter to his daughters, President Barack Obama has written a moving tribute to thirteen groundbreaking Americans and the ideals that have shaped our nation. From the artistry of Georgia O'Keeffe, to the courage of Jackie Robinson, to the patriotism of George Washington, President Obama sees the traits of these heroes within his own children, and within all of America's children"--Book jacket.