Jen Green

"In this book, young readers will learn about the diet, life cycle, behavior and habitat of sea otters."--

"In this book, young readers will learn about the diet, life cycle, behavior and habitat of California sea lions."--

How do we know that the Sun is at the center of our solar system? This scientific theory is know as heliocentrism. This fascinating book looks at the historical controversies that surround the theory of heliocentrism and tells the stories of the scientists who worked on the theory. It also examines how the theory of heliocentrism was arrived at, how it was tested, and what impact the theory has had on our understanding of science today.

Ten thousand years ago, life was different. People were nomadic, and their life spans were short. During this time, people practiced trepanning, one of the early human medical procedures. Today, the diseases that wiped out millions just a few hundred years ago have been completely eradicated thanks to developments in medicine. Readers explore some of the earliest medical discoveries, how medicine has developed, and how it continues to have an impact...

Evolution is the process through which living things change with time, adapting to the changing environment around them, and new species form. Fossils provide important evidence for the theory of evolution, but so too do other kinds of evidence, such as the distribution of modern species, animals' appearance, and DNA. This book offers a comprehensive and lavishly illustrated account of Darwin's observations and theory of evolution, the body of knowledge...

We are all aware of the importance of the environment - it's in the news, it affects our behavior and the decisions we make every day. But what actual impact has environmental thinking had on the world around us? This thought-provoking book looks at the way changing ideas about the environment and sustainability have affected the way we obtain our food, and will do so in the future.

Set sail on a voyage of discovery with My First Fact File: Oceans. Children will learn about the amazing ecosystems and habitats and the creatures that live in them, how the waves, wind and weather shape our planet, as well as the threat to ocean life from pollution and climate change.

Living busily on Planet Earth, we rarely remember that we inhabit only a miniscule part of the universe. In The Planets and The Solar System, Jen Green paints the wider picture, and takes us on a journey across billions of kilometres in our galaxy, from our Sun to near and distant planets. Some, like Mercury, have a molten core surrounded with crust and spin quickly; Jupiter, on the other hand, is a big ball of gas. For 2,500 years, mathematicians...

Journey back in time to the age of the dinosaurs, the biggest, scariest creatures the world has ever known. Which dinosaurs hunted in packs like wolves? What was the deadliest dinosaur of them all? Which were the very largest species? Not all dinosaurs were bloodthirsty meat-eaters, but all were armed and dangerous. You are advised to keep well clear as we tour the world of the dinosaurs, taking a detailed look at all the most amazing species.

An introduction to the sea mammals including physical characteristics and living areas of dolphins, whales, seals and sea cows.