
When I began looking more closely at Earth’s systems, I realized how easy it is to use what exists without thinking much about what keeps everything working. Water comes from the tap. Food is waiting at the store. The lights come on, our phones connect and the roads take us where we need to go.
There’s so much behind all of that.
This section is about those larger systems and what we can do to maintain them, improve them and, where damage has already happened, help restore them.
Soil has to remain healthy enough to grow food and support the life within it. Water supplies need protection from waste and contamination. Forests, deserts, wetlands, grasslands and oceans need room to function as living places, not simply as resources for us to use. At the same time, people need homes, food, transportation, electricity and materials for daily life. Somehow, we have to find better ways for those needs to exist together.
Climate change is making that more difficult and more urgent. Rising temperatures and changing weather patterns aren’t affecting every place in the same way. One community may be facing drought and wildfire while another is dealing with flooding, stronger storms or water that’s no longer dependable. Growing seasons are changing too. Plants and animals may lose habitat or have to move into new areas, if there’s anywhere for them to go.
I can see some of this where I live in the desert. Water has always mattered here, but longer periods of extreme heat make shade, healthy soil, fire preparation and careful water use even more important. Someone living near the coast, in the mountains or in a crowded city will be seeing something different.
That’s one reason I don’t believe there can be one answer for every place. We need to look at what’s actually happening where we live. Where does the water come from? Is the soil being protected or lost? Which plants and animals belong there? What resources are being used faster than they can recover?
Technology will certainly be part of what comes next, and this section also looks at some of the emerging and future approaches now being explored. Solar and wind power, better energy storage, water reuse, more efficient buildings and new ways of growing food may all help.
One of the more encouraging changes I noticed while researching this section is the growing interest in reusing and repurposing what we already have. Instead of continuing to discard materials, tear everything down and build again from the beginning, more people are looking at how buildings, products, metals, water and even waste can be given another purpose. Some materials can be recovered. Older buildings can be adapted. Parts can be repaired or used again. What was once treated only as waste may become a resource for something new.
I find that hopeful. We’ll still need new materials and new construction, but perhaps we can become more thoughtful about using what’s already here first. Emerging technology isn’t automatically better simply because it’s new, so I’ll also look at the questions that come with it. What resources does it require? Where do they come from? How long will it last? Can it be repaired, reused or safely returned to the Earth when it’s no longer useful?
Individuals have a part in this, but the responsibility doesn’t rest only with you and me. Governments, businesses and industries make decisions on a much larger scale. Their choices affect land, water, air, workers, wildlife and entire communities. What we do in our own lives matters, but lasting improvement also needs better policies, responsible business practices and people working together.
The pages in this section take a closer look at soil, water, food, energy, climate, materials, buildings and the other systems supporting modern life. You can begin with whatever feels closest to your own experience or touches your heart.
My hope is that understanding these systems will help you see what’s changing, what needs more care and what can still be improved. We depend upon this Earth every day. Caring for it is also a way of caring for one another and for those who’ll live here after us.

Kindergarten–Grade 3
We Live Within Earth’s Systems

Listen to This Page
The written text on this page serves as the full and official version of this content
Earth gives living things many of the things they need.
-
Soil helps plants grow.
-
Water moves through clouds, rain, rivers, plants, animals, and people.
-
Air provides oxygen for breathing.
-
Sunlight gives Earth light and warmth and helps plants make food.
-
Plants, animals, insects, and tiny living organisms help ecosystems work.
-
People use food, water, energy, buildings, roads, and many other shared resources.
Your body is connected to these systems. The air you breathe, water you drink, and food you eat all come from the world around you.
Caring for Our Shared Home
People can help care for Earth in many ways. We can:
-
Use water carefully.
-
Protect plants, animals, and their homes.
-
Care for soil.
-
Avoid wasting food and other resources.
-
Reduce litter and pollution.
-
Learn what the place where we live needs.
A desert does not need the same care as a forest, city, farm, or coast. Paying attention helps us make choices that fit our own community.
Earth also travels around the Sun, and the Moon travels around Earth. We are part of a much larger universe—but the choices we make here at home still matter.
We do not have to do everything perfectly. We can learn, notice, and help care for the living systems around us.
Explore Earth Systems
Discover more about soil, water, food, energy, air, climate, ecosystems, and the places people build.
Grades 4–7
We Live Within Earth’s Systems

Listen to This Page
The written text on this page serves as the full and official version of this content
The human body exists within larger systems of air, water, soil, food, energy, climate, ecosystems, and built environments. These systems provide the conditions and resources that support daily life.
-
Soil supports plants, food production, microorganisms, and water movement.
-
Water travels through oceans, clouds, rain, rivers, soil, plants, animals, communities, and bodies.
-
Air connects our lungs with the wider atmosphere.
-
Sunlight supports plant growth, influences weather and climate, and helps regulate biological rhythms.
-
Food connects soil, water, climate, plants, animals, workers, transportation, energy, and communities.
-
Energy powers homes, farms, hospitals, transportation, water systems, schools, and businesses.
-
Built environments influence air, light, temperature, movement, noise, safety, accessibility, and daily life.
These are functional connections. People depend on natural systems as well as the farms, technologies, buildings, workers, and communities that help bring essential resources into everyday life.
Participation, Not Perfection
Stewardship means participating thoughtfully in the systems that support life. It can include caring for soil, using water responsibly, reducing unnecessary waste and pollution, protecting habitats, choosing materials carefully, or helping make homes and communities healthier.
Useful choices depend on where people live. A desert community may focus on conserving water and preparing for heat and fire. A coastal community may focus on storms, wetlands, flooding, and ocean health. A city may give greater attention to air quality, transportation, waste, heat, and green space.
There is no single perfect approach for every person or place.
What Can You Explore?
-
Soil and Land
-
Water Systems
-
Food Systems
-
Energy and Resources
-
Buildings and Materials
-
Air, Climate, and Ecosystems
-
Wildlife and Biodiversity
-
New Environmental Technologies
-
Earth Systems Responsibility
Earth is also part of something larger. It travels around the Sun within our solar system, which is part of the Milky Way galaxy. The Sun supplies most of the energy that supports life on Earth, while the Moon helps influence ocean tides.
We cannot control every part of nature or the wider universe. We can influence how we treat soil, use water, produce food and energy, build communities, manage waste, and protect living habitats.
Observation is an important part of learning. Watching weather, wildlife, plants, soil, water, and seasonal patterns helps people understand their surroundings. Scientific research and lived experience can work together to guide better decisions.
The goal is not fear, blame, or perfection. It is to understand Earth’s systems and participate in them with greater awareness.

