For thousands of years, smallpox had been one of the world's biggest killers. From the terrible plague that nearly wiped out the entire Aztec and Inca populations in the 1500s to the outbreak in the colonies that killed many of George Washington's troops during the Revolutionary War, smallpox has been responsible for some of the worst epidemics of all time. In the 1960s, the World Health Organization started a worldwide vaccination campaign in an attempt to wipe out this disease once and for all. By 1980 they declared victory, and there hasn't been a known case of smallpox since. But are we really completely safe from this terrible killer? In Smallpox: Is It Over?, children become medical detectives as they investigate the history of the disease, how it spreads, and the impressive details of how doctors and scientists developed a cure that has saved millions of lives. Packed with large photos and written in a narrative style, kids will come to understand the devastation that a contagious disease can inflict--and learn how humankind bravely responds.
Imagine your life without the sense of sight. Many things would be different without the amazing process through which your eyes focus light so that you can see. Taking care of your eyes is very important, so as you explore the sense of sight, be sure not to read this book by dim light! Blastoff! Series
Do you know how many bones are in your body? Get under your skin in this introduction to the skeletal system. Young readers will discover how bones fit together, how they move, and how they protect other parts of the body. Blastoff! Series
Roonie B. Moonie yearns to be a great explorer like his hero, Christopher Columblebee. But, while exploring one day, he wanders into a dark, unfamiliar place and finds himself in one scary situation after another. Approached by a suspicious stranger offering to help, Roonie must rely on his mother's guidance and on his instincts to keep himself safe. Will he be lured away by a stranger? Will he find his way back home? How does he decide who can be trusted? Janan Cain's delightfully illustrated story helps children understand the importance of following safety rules, staying calm, and trusting their feelings.
On a hot September day in 1924, Jesus Lajun noticed a terrible smell coming from his house in Los Angeles. He went down to his basement and discovered a dead rat, which he picked up and tossed in the trash. A few days later, Lajun came down with a fever and noticed a strange, purple lump on his thigh. Soon Lajun was dead, as was his daughter, several of his neighbors, his ambulance driver, and even the priest who had performed his funeral. All of them died from the same illness! What killed Jesus Lajun and quickly spread with disturbing ease to the people around him? A doctor studying the case soon discovered that it was plague, a deadly disease that's spread by fleas and rodents--including rats. In Bubonic Plague: The Black Death!, children will learn all about the three forms this disease takes in the human body--bubonic, pneumonic, and septicemic--including how the disease spreads, the worst outbreaks in history, and how doctors have developed effective medicines to combat the illness. Most important, children learn how to avoid catching bubonic plague in the first place!
One of the oldest diseases in history, malaria was once common all over the world. Some scientists believe that malaria may have killed more people than any other disease in human history. Fortunately, doctors now understand the causes of the disease and have developed effective treatments. Yet in some parts of the world, malaria continues to kill hundreds of thousands of people each year. In fact, it's estimated that every 30 seconds a child in Africa dies from this terrible disease. Why is this super killer still taking so many lives? And will humans ever conquer malaria once and for all? In Malaria: Super Killer!, children will learn all about this disease, including its history, how it spreads, and how doctors and organizations continue to work to eradicate the illness from impoverished areas. Readers will also meet individuals like Dawn Dubsky, a malaria survivor from Chicago who founded America Against Malaria, a group working to defeat the disease in the African nation of Ghana.
In the 1700s, cities in Europe and North America were expanding quickly, and many people lived in tiny, cramped homes and tenement buildings. During this time, tuberculosis (TB) outbreaks were common--and deadly. Between 1700 and 1900, TB killed about 1 billion people around the world. Why? In the 1880s, a German doctor discovered that TB was caused by tiny germs that could spread whenever a person suffering from the illness coughed or sneezed--or even breathed! The crowded living conditions in cities made deadly TB outbreaks more likely. By the 1950s, effective antibiotics for tuberculosis had been created and the disease was considered treatable. So people don't need to worry about contracting the illness anymore, right? Readers will learn otherwise when they meet Oswaldo Juarez, a nineteen-year-old student who lived in Florida. He was hospitalized and almost died from a new form of TB--in 2007! In Tuberculosis: The White Plague!, kids will learn all about the history of this contagious illness, how the disease continues to mutate and adapt, and the ways doctors are fighting back and developing new cures.