Presents an introduction to light and sound, discussing their identifying characteristics, color, mirrors, refraction, acoustics, sound waves, and human hearing and vision.
"'Fossil Fuels' explores the fuels that we use every day. You will learn about everything from how coal forms to the many products made from oil. You will discover how coal, oil, and natural gas help
"'Climate Change' explores one of the biggest topics of our time. You will learn about everything from causes of climate change to how scientists gather data about global warming. You will discover th
Presents the lives and theories of famous medical scientists from the eighteenth century to the present, describing their discoveries and the importance of their work for the study of the causes and t
Presents the lives and theories of famous astonomers throughout history up to the present day, describing their discoveries and the importance of their work for the study of the Universe.
