Do you know that only 200 years ago, the only way that one person could send a message to another person was by letter or messenger? It's hard to imagine now, with our smartphones and computers at our fingertips. From the invention of the telegraph in the 1830s all the way through to the wearable technology of the present day, this book charts the incredible history of telecommunications.
Read all about the planets in our solar system. Discover which are the biggest and smallest and the hottest and coldest planets and find out what makes Earth so special.
This book looks at Earth's place in the solar system and its special nature which makes it the only planet able to support life. The book describes the characteristics of the earth and moon and how they move in space and in relation to each other. It also asks what the future holds for earth and its moon.
This book looks at the Solar System's rocky inner planets : Mercury, Venus, Earth and Mars. It shows how each planet was formed, describes its structure and characteristics and looks at how each planet moves around the sun. It also asks what the future holds for each of the inner planets.