6 copies of each issue at all three reading levels (216 books) and 12 Teacher's Guides for a total of 228 books.
6 copies each of all three reading levels, 18 books total. For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking... more
6 copies each of all three reading levels, 18 books total. The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that ... more
6 copies each of all three reading levels, 18 books total. Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the ... more
6 copies each of all three reading levels, 18 books total. According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some peop... more
6 copies each of all three reading levels, 18 books total. At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairl... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growth.... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in lakes, strea... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in lakes, st... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countries ... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countries and... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countries ... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To address th... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To address these... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To address th... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of energy ... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of energy are... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of energy ... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health care, a... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health care, and ... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health care, a... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries to mo... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries to more ... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries to mo... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact on ... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact on peo... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact on ... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. The ... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. The tre... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. The ... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growt... more
6 copies each of all three reading levels, 18 books total. Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, me... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growth. ... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growt... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and the... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and the im... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and the... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of the na... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of the natur... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of the na... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In sever... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In several ... more
6 copies each of all three reading levels, 18 books total. Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditiona... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In sever... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in la... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in lakes... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in la... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor cou... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countr... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor cou... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To add... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To addres... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To add... more
6 copies each of all three reading levels, 18 books total. Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of ... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of ene... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of ... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health ... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health car... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health ... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countrie... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries t... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countrie... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous imp... more
6 copies each of all three reading levels, 18 books total. Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these ene... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous imp... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declinin... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. ... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declinin... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of populatio... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population g... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of populatio... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted ... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and... more
6 copies each of all three reading levels, 18 books total. Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have mor... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted ... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of th... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. I... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In s... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. I... more
6 copies each of all three reading levels, 18 books total. From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause peo... more
6 copies each of all three reading levels, 18 books total. Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and ac... more