When we think about technology, we often picture computers, smartphones, or robots. But technology can also help us understand and protect the environment.
From satellites that track changes in Earth's climate to solar panels that turn sunlight into electricity, scientists and engineers are developing tools to address some of the world's biggest environmental challenges.
And the people creating these solutions come from many different STEM backgrounds.
Environmental science, engineering, computer science, and mathematics all play important roles in understanding our planet and finding ways to protect it.
For students who care about animals, nature, or the environment, exploring environmental STEM can be an exciting way to connect their interests with science and technology.
What Is Environmental STEM?
Environmental STEM brings together different scientific and technical fields to study the natural world and develop solutions to environmental problems.
Environmental scientists investigate topics such as air quality, water pollution, climate change, and ecosystems.
Engineers design technologies that can reduce waste, improve energy efficiency, or help communities access clean water.
Computer scientists create programs that analyze environmental data, while mathematicians develop models that help researchers understand patterns and predict changes.
These fields often overlap.
For example, a project focused on improving water quality might involve scientists collecting samples, engineers designing filtration systems, and programmers developing software to analyze the results.
This collaboration demonstrates how different STEM skills can contribute to solving the same problem.
How Solar Panels Turn Sunlight Into Electricity
One example of environmental technology is solar energy.
Solar panels use photovoltaic cells to convert sunlight directly into electricity.
When sunlight reaches certain materials inside a solar cell, it can cause electrical charges to move, generating an electric current.
This electricity can then be used to power homes, schools, and other buildings.
Solar energy is considered renewable because sunlight is naturally replenished.
However, engineers still face challenges when designing solar energy systems.
They must consider factors such as cost, efficiency, energy storage, and how much sunlight a location receives.
Improving solar technology requires knowledge of physics, materials science, electrical engineering, and mathematics.
For students interested in engineering, solar panels provide an example of how scientific principles can be used to develop practical solutions.
Using Satellites to Understand Our Planet
Have you ever wondered how scientists study changes happening across the entire Earth?
Satellites make it possible to observe our planet from space.
NASA and other scientific organizations use satellites to collect information about Earth's atmosphere, oceans, land, and ice.
These observations can help researchers monitor changes in sea level, track wildfires, study vegetation, and investigate long-term climate patterns.
Satellites collect enormous amounts of data, which scientists must organize and analyze.
Computer programs help researchers process satellite images and identify patterns that might be difficult to recognize manually.
For example, comparing images collected over time can help scientists study changes in forests or ice coverage.
This work combines environmental science with computer science, engineering, and data analysis.
Can Coding Help Protect the Environment?
Coding is useful for much more than creating websites or video games.
Computer programs can help scientists collect, organize, and interpret environmental information.
For example, researchers may use software to analyze temperature measurements, model weather patterns, or study changes in air quality.
Technology can also support conservation efforts.
Scientists sometimes use camera traps to observe wildlife in natural habitats. Computer vision tools can help researchers sort large collections of images and identify animals.
These technologies don't replace the need for scientific knowledge or human judgment, but they can make certain research tasks more efficient.
For students who enjoy coding and care about the environment, environmental data projects offer a way to combine both interests.
Engineering Solutions for Cleaner Water
Access to clean water is essential for human health and the environment.
Engineers develop technologies that help remove contaminants from water and improve water treatment systems.
Different treatment methods address different types of contamination.
For example, filtration can remove certain suspended particles, while other treatment processes may be needed to remove dissolved chemicals or harmful microorganisms.
Engineers must consider the type of contamination, the materials available, the cost of treatment, and how a system will be maintained.
Water treatment is an example of how engineering solutions must be designed around real-world needs.
A technology that works well in one community may need to be adapted for another.
Try It at Home: Build a Mini Water Filter
This simple activity introduces students to the engineering design process and demonstrates how different materials can remove some visible particles from water.
Materials:
A clear plastic bottle with the bottom removed, prepared by an adult
Coffee filters or cotton balls
Clean sand
Small gravel or pebbles
A clear container
Water mixed with a small amount of soil
Step 1: Prepare your filter
With adult supervision, place the bottle upside down over a container. Keep the cap removed and cover the opening with a coffee filter or cotton.
Step 2: Add filtering materials
Carefully layer sand and gravel inside the bottle.
Step 3: Make a prediction
Ask which materials might remove the most visible dirt from the water.
Step 4: Test your design
Slowly pour the soil-water mixture into the filter and observe what comes out.
Step 5: Compare the results
Look at the water before and after filtration. Does it appear clearer?
Step 6: Improve your design
Try changing the order or thickness of the layers. Does the water look different after another test?
Important: This is a demonstration of particle filtration only. Water that looks clear may still contain harmful microorganisms or dissolved contaminants. Do not drink the filtered water.
This activity introduces children to the idea that engineering involves testing different designs, observing results, and making improvements.
Small Ideas Can Lead to Big Innovations
Not every environmental solution begins with a large research project.
Sometimes, an idea starts with noticing a problem in everyday life.
A student might wonder why certain areas of their school get hotter than others. Another might notice how much food packaging gets thrown away during lunch.
These observations can lead to questions worth investigating.
Could different materials reduce heat? Could a new product design create less waste? How could we measure the amount of energy used in a classroom?
Encouraging children to explore these questions helps them recognize that they can participate in scientific thinking and engineering design.
Even when a project doesn't produce an immediate solution, the process of investigating a problem can develop valuable skills.
Helping Girls Become Environmental Innovators
Environmental challenges are complex, and addressing them requires people with different interests, experiences, and skills.
Some students may be interested in studying wildlife or ecosystems. Others may enjoy designing technology, working with data, or building new inventions.
Environmental STEM offers opportunities for all of these interests.
At Girls Code the World, we believe that introducing girls to different STEM applications can help them discover how their skills and creativity might contribute to the world around them.
Whether they're learning to code, experimenting with renewable energy, or exploring ways to reduce pollution, students can begin developing the knowledge and confidence to tackle meaningful challenges.
Because the next idea that helps protect our planet could begin with a curious student asking, “What if we tried something different?”
Sources
1. NASA — Earth Science
Explains how NASA uses satellites, scientific instruments, and data to study Earth's climate, oceans, atmosphere, and ecosystems.
https://science.nasa.gov/earth/
2. U.S. Department of Energy — Solar Energy Technologies Office
Provides information about solar energy, photovoltaic technology, and research to improve solar energy systems.
https://www.energy.gov/eere/solar/solar-energy-technologies-office
3. U.S. Environmental Protection Agency — Drinking Water
Explains drinking water quality, contamination, and the importance of water treatment.
https://www.epa.gov/ground-water-and-drinking-water
4. NASA — Climate Change
Provides scientific information about Earth's changing climate and the technologies used to monitor environmental conditions.
https://science.nasa.gov/climate-change/
5. National Oceanic and Atmospheric Administration — Education
Offers educational resources about environmental science, weather, climate, oceans, and Earth systems.