Grade level: 8, 9, 10, 11, 12, i, s.

Dig into this photo-packed Penguin-Smithsonian book about fossils—and find out what was going on in our world. Aren't you curious about what Earth was like lo

100 things you should know about Dinosaurs takes you on a journey of discovery through one of the most thrilling periods of natural history. Exactly 100 facts,

Briefly describes different kinds of rocks and minerals, telling how they are formed, where they are found and their uses and examines what we can learn from fo