Katie Marsico

"Learn all about the highest and lowest places on Earth and find out what it takes for life to survive in these extreme locations."--

"Learn all about the oldest and newest places on Earth and find out how the world has changed over time."--

"Learn all about the darkest and brightest places on Earth and find out what it takes for life to survive in these extreme locations."--

"Find out why elephants are in danger of dying out, what effect these animals have on the environment, and what people are doing to save them from extinction."--

"Find out why gorillas are in danger of dying out, what effect these animals have on the environment, and what people are doing to save them from extinction"-- Examines why gorillas are endangered, discussing their effect on the environment and exploring how people are trying to save them.

"Find out why many bear species are in danger of dying out, what effect these animals have on the environment, and what people are doing to save them from extinction"--

"Learn all about warships, from how they have influenced history to how the technology behind them has improved over time."--

"Learn all about some of the world's tallest, most incredible buildings, from how they are designed and built to how skyscraper technology has changed over time"--