Titoli in Biografie

Plastic bags are cheap and easy to use. But what happens when a bag breaks or is no longer needed? In Njau, Gambia, people simply dropped the bags and went on their way. One plastic bag became two. Then 10. Then a hundred. The bags accumulated in ugly heaps alongside roads. Water pooled in them, bringing mosquitoes and disease. Some bags were burned, leaving behind a terrible smell. Some were buried, but they strangled gardens. They killed livestock that tried to eat them. Something had to change.

In addition to being a superstar wrestler in the WWE, John Cena is also a famous actor. This carefully leveled text will be a hit with young wrestling fans.

Ernest Everett Just was not like other scientists of his time. He saw the whole, where others saw only parts. He noticed details others failed to see. He persisted in his research despite the discrimination and limitations imposed on him as an African American. His keen observations of sea creatures revealed new insights about egg cells and the origins of life.

Basketball forward Kevin Durant plays for the Golden State Warriors. This title's listener-friendly text and critical-thinking questions will attract young fans of Durant and the Warriors.

Aaron Rodgers is the star quarterback for the Green Bay Packers. With carefully leveled text, this title will appeal to young football fans.

Lionel Messi plays for Barcelona and is considered to be one of the best soccer players in the world. With carefully leveled text and critical-thinking questions, this title will be a hit with young soccer fans!

Get ready to bow down - if you don't want to lose your head! Some of history's most ruthless leaders are headed your way. Some of these rulers schemed their way to the top. Others just conquered everything around them. Are you fearless enough to keep listening?

Right out of college, Abby Wambach shot to fame in the United States soccer scene. In 2002, she was picked second in the Women's United Soccer Association draft by the Washington Freedom. She also became a leading scorer on the US Women's National Team. After winning the 2012 FIFA Women's World Player of the Year award and two Olympic gold medals, Abby is still going strong. She holds the world record for international goals. Follow Abby's story from her beginnings at University of Florida to becoming an international soccer superstar.

Although she's just four feet, 11 inches tall, Gabby Douglas made a larger-than-life impact on the 2012 Olympic Games in London. Gabby dominated the gymnastics all-around competition with her flawless execution and amazingly high flips, winning gold by a landslide. In early 2012, this pint-sized powerhouse was ready to quit gymnastics for good, but she kept going. Competing at the Olympics at just 16 years old, she became the best female gymnast in the world. Hear about this incredible athlete's journey from Virginia Beach to London gold.

How often do you write or read? Do you live in or near a city? Writing and cities both began in ancient Mesopotamia. Six thousand years ago, the ancient Mesopotamians created tools and treasures that still shape our lives. Find out where the ancient Mesopotamians lived, what their lives were like, and what happened to them. Discover how they changed the world!

Many people believed NFL quarterback Aaron Rodgers would quickly become a star when he joined the Green Bay Packers in 2005. But as the backup to Brett Favre, Aaron didn't get to play much during his first three seasons. When Aaron took over as starting quarterback in 2008, he showed that he belonged on the field. Aaron led his team to the playoffs in 2009. The next season, he guided the Packers to victory in Super Bowl XLV. Learn more about this amazing quarterback's journey from his childhood in California all the way to Super Bowl MVP.

You may know that Katy Perry is a shining star of pop who has soared to number one on the charts again and again. But did you know that Katy: is a pastor's kid times two? Both her mom and dad are pastors who encouraged her to sing in church; was dropped by two recording labels before she finally got her big break with Capitol Records?; exercises by jumping rope before every single show? Want to know more about the life of this talented celebrity? Listen on to learn all about Katy's childhood, career, favorite things, love life, future goals, and more!

Carefully leveled text engages young readers in learning about how pilots help their community. Age-appropriate critical thinking questions help build nonfiction learning skills.

Carefully leveled text engages young listeners in learning about how nurses serve their community. Age-appropriate critical thinking questions help build nonfiction learning skills.

Have you ever dreamed of going to outer space? When Sally Ride was a little girl, she watched on TV as astronaut John Glenn launched into space. Twenty years later, she became the first American woman to go to space. Ride had loved science since she was young. Some of her teachers thought she was wasting her time studying science, but she went on to earn her PhD in astrophysics anyway. When NASA's astronaut training program opened to women, Ride quickly applied. Some people thought women couldn't handle space flight. But Ride worked hard and proved them all wrong.

Have you ever stared into the night sky, full of stars and planets? As a kid, Neil deGrasse Tyson was star-struck when he first visited a planetarium. The universe was calling him. Tyson pursued his interest in astronomy and studied to be an astrophysicist. In 1996, he became the director of New York's Hayden Planetarium. He is passionate about teaching people about the universe. Known for making science fun and easy to understand, he has hosted and appeared on TV shows such as Nova ScienceNow and The Daily Show with Jon Stewart.

Moe Berg is not a typical baseball player. He's Jewish - very unusual for the major leagues in the 1930s - has a law degree, speaks several languages, and loves traveling the world. He also happens to be a spy for the US government. When World War II begins, Moe trades his baseball career for a life of danger and secrecy. Using his unusual range of skills, he sneaks into enemy territory to gather crucial information that could help defeat the Nazis. But he also has plenty of secrets of his own...

Do you think science is fun and exciting? Bill Nye does. In fact, he wanted to become an astronaut, but NASA rejected his applications. Instead, Nye has spent his career helping other people understand science and showing them how cool science can be. Nye went to college to become a mechanical engineer, and he got a job working for an aircraft company. But soon, he began focusing more and more on a career in comedy. Eventually, he got his own popular TV show called Bill Nye the Science Guy.

Do you enjoy visiting animals at the zoo or playing with pets? As a child, Jane Goodall loved watching and interacting with animals. As an adult, she became a scientist working with chimpanzees in Africa. Goodall used unconventional research methods to observe chimpanzees in East Africa. She studied the chimpanzees' behavior and revealed their tool-making abilities. She is one of the world's best-known scientists and activists. But how did she get there? Find out how Goodall's passion for animals helped her become the face of conservationism.

What do you want to be when you grow up? When Katherine Johnson was young, women weren't expected to go into the math and science fields. After studying math in school and teaching for a few years, she learned that the organization that would later become NASA was hiring women to complete mathematical equations. As an African-American woman, Johnson had to work hard to earn the respect of her coworkers, but they soon came to rely on her brilliant calculations. Learn how Johnson broke barriers as a female African-American mathematician.