How did the dinosaurs die? They were the biggest, most powerful animals that ever walked the earth. Now they are all gone -- extinct. Sixty-five million years ago, a giant asteroid slammed into Earth, with devastating effects. Paleontologist Charlotte Lewis Brown and artist Phil Wilson recreate what may have happened to the dinosaurs on that deadly day.

In its 4.5 billion–year history, life on Earth has been almost erased at least half a dozen times: shattered by asteroid impacts, entombed in ice, smothered by methane, and torn apart by unfathomably powerful megavolcanoes. And we know that another global disaster is eventually headed our way. Can we survive it? How?
As a species, Homo sapiens is at a crossroads. Study of our planet’s turbulent past suggests that we are...

Examines various scientific theories about the extinction of the dinosaurs, involving floods, giant meteorites, cold weather, disease, and simultaneous volcanic eruptions.

Paleobiologist Anthony D. Barnosky weaves together evidence from the deep past and the present to alert us to the looming Sixth Mass Extinction and to offer a practical, hopeful plan for avoiding it. Writing from the front lines of extinction research, Barnosky tells the overarching story of geologic and evolutionary history and how it informs the way humans inhabit, exploit, and impact Earth today. He presents compelling evidence that unless we rethink...

Explains what insects are and how they differ from other animals, with an overview of the life cycle of a variety of insects, including ants, bees, cockroaches, grasshoppers, dragonflies, and butterflies.

See a dragonfly nymph grow and shed her skin and then soar on wings. Includes questions and answers about dragonflies.

Text and illustrations explore the theory that the collision of an asteroid with the Earth ended the Cretaceous Period and caused the extinction of the dinosaurs.

Demonstrates how various insects blend into their surroundings through camouflage, including walking leaves, cicadas, and treehoppers.

Explores the world's oceans.