Some animals look so alike, it's difficult to tell which is which! The Porpoise or Dolphin book in the Which Is Which? series helps readers discover the similarities and differences between porpoises and dolphins. Focused on 21st Century content, the Which Is Which? series encourages readers to ask questions, think more critically and creatively, and use their problem-solving skills. Book includes table of contents, sidebars, glossary, index, and...

This book discusses the origins, philosophy, and most notorious attacks of the Egyptian Islamic Jihad terrorist group, including their present activities, possible plans, and counter-terrorism efforts directed against them.

From conquering a difficult natural environment to fighting in political power struggles, the peoples of Sub-Saharan Africa have met every obstacle with determination. Comprised of 46 countries, this region is also diverse and bountiful with vibrant cultures. This book features fact-filled text that explores and explains this area's cultures. Full-color photographs spotlight the clothes, art, celebrations, and traditions that make Sub-Saharan Africa...

"Learn all about the history of antibiotics, from how they were first invented to how they impact our lives today."--

"Learn all about the history of deep sea exploration, from how explorers reach new depths to what they find there."--

Presents the life and career of Alan Shepard, including several of his space missions.

Looks at polar bears and how they survive in the wild, raise their cubs, and are related to other species.

Chronicles the life and career of the creator of Minecraft video game.

"Introduces young readers to primary sources related to the Statue of Liberty"--

"Introduces young readers to primary sources related to the Star-Spangled Banner"--