Royston, Angela

Discusses smallpox, covering vaccinations, inoculation, and the possibility of its return.

This book walks readers through the scene of the crime and into the forensics lab. Along the way, they'll meet the skilled professionals involved in homicide cases. From identifying the murder weapon to tracking a killer on the run, readers will be awed by the amount of meticulous work that goes into homicide investigation.

"This book explores the food chains and webs that exist in a desert habitat. It equips readers with crucial vocabulary, using examples from that habitat to explain the roles of producers, consumers and decomposers, and illustrates how living things depend upon each other. Readers learn how fragile food chains can be, how they can be broken, and what we can do to prevent this"--Provided by the publisher.

"Explores the rich food chains and webs that exist in a rain forest habitat, using examples from that habitat to explain the roles of producers, consumers and decomposers, and illustrates how living things depend upon each other"--Provided by publisher.

Examines climate change throughout the world, discussing global warming, unpredictable weather, melting icecaps, and more.

"Explores the food chains and webs that exist in river habitats, using examples from that habitat to explain the roles of producers, consumers and decomposers, and illustrates how living things depend upon each other"--Provided by publisher.

Discusses discoveries in medicine and the people who made them, covering the invention of the stethoscope, inoculation, anesthesia, germs, aspirin, and more.

Explains why the human body needs proteins to function healthily and what happens if people get too much or too little protein.

Examines the nutritional benefits of water and fiber and discusses how they help the digestive system function.

Photographs and facts provide information about polar bears, looking at where they live, what they eat, what they look like, and how they behave.