• Big Question: Why Is Science Necessary to Solve Environmental Problems?

Chapter 2: Human Population Growth

• Big Question: Why Is it the Underlying Environmental Problem?

Chapter 3: Biogeochemical Cycles

• Big Question: Why Are They Essential to Long-Term Life on Earth?

Chapter 4: Ecosystems

• Big Question: What Is Necessary to Sustain Life on Earth?

Chapter 5: Biological Diversity

• Big Question: Can We Save Endangered Species and Keep Biological Diversity High?

Chapter 6: Restoration Ecology

• Big Question: Can We Restore Damaged Ecosystems?

Chapter 7: Forests and Wildlife

• Big Question: Can We Have Them and Use Them Too?

Chapter 8: Environmental Health, Pollution and Toxicology

• Big Question: Why Are Even Tiny Amounts of Pollutants a Major Concern?

Chapter 9: Agriculture and Environment

• Big Question: Can We Feed the World Without Destroying the Environment?

Chapter 10: Energy and the Environment

• Big Question: Can We Assure a Sustainable Supply of Energy?

Chapter 11: Water and the Environment

• Big Question: Can We Maintain Our Water Resources for Future Generations?

Chapter 12: Oceans and the Environment

• Big Question: Can We Learn to Manage the Oceans’ Resources?

Chapter 13: Earth’s Atmosphere and Climate

• Big Question: Is Global Warming Happening and Are We Part of the Problem?

Chapter 14: Air Pollution and the Environment

•Big Question: Why Is Air Pollution in Cities Still Such a Big Problem?

Chapter 15: Minerals and the Environment

•Big Question: Is It Possible to Use Nonrenewable Mineral Resources Sustainably?

Chapter 16: Waste Management

• Big Question: Is Zero Waste Possible?

Chapter 17: Natural Hazards

• Big Question: Why Are More Hazards Becoming Disasters and Catastrophes?

  Chapter 18: Environmental Economics

• Big Question: Can We Put a Price on Scenic Beauty, Endangered Species, and the Quality of Life?

Chapter 19: Planning for a Sustainable Future

• Big Question: Can We Plan and Achieve a Future “Ecotopia”?