Boy Scouts of America

Environmental Science Merit Badge

Eagle Scout insignia Eagle Required

Environmental Science
Merit Badge

Scouting America Merit Badge Hub

Scouting America
Merit Badge Hub

Environmental Science

Requirement Updates 2025

This Merit Badge’s Requirements have recently been updated in 2025 Scouts BSA Requirements (33216). Please read more about “Requirements” on the Merit Badge Hub homepage. The previous version of the Merit Badge requirements can be found in Scoutbook.

Environmental Science Merit Badge Overview

While earning the Environmental Science merit badge, Scouts will get a taste of what it is like to be an environmental scientist, making observations and carrying out experiments to investigate the natural world.
Environmental-Science_MB-overview

Environmental Science Merit Badge Requirements

The previous version of the Merit Badge requirements can be found in Scoutbook

The requirements will be fed dynamically using the scout book integration 46
1. Describe the meaning of environmental science in your own words. Explain how you think we can use science to understand, conserve, and improve our environment.
2. Ecology. Do the following and discuss with your counselor:
  • (a) Choose an area approved by your counselor and observe (sight, sound, and smell) its ecosystem over a two-day period.
  • (b) Make notes about the living, nonliving (e.g. rocks) and formerly living components. Include information about interactions among the components, including the food chain, predators, native species, and invasive species) and identify how human activities have affected the ecosystem.

3. Air Pollution. Do ONE of the following and discuss with your counselor:
  • (a) Learn what Particulate Matter (PM) is, how PM gets into the air, what the harmful effects of PM are, and what is being done to reduce PM in the air. Then, perform an experiment to test for particulates that contribute to air pollution.
  • (b) Discuss how air pollution and transportation affect each other by giving at least three examples. Then, compare two modes of transportation (e.g., gasoline-powered v. electric vehicles, gasoline-powered car v. bicycle, etc.).
  • (c) Learn about the Clean Air Act. Make notes on when it was passed, its environmental goals, what progress has been made and what remains to be done to achieve the law's goals. Describe the impact, benefits, and costs of the law as well as what is required to implement and enforce the law.

4. Water Pollution. Do ONE of the following and discuss with your counselor:
  • (a) Identify where your community sources water, how it is treated, and disposed. Obtain and review a water quality report from your area.
  • (b) Identify a local or regional area that experiences periodic flooding and/or drought. Collect facts on prior event(s) and investigate the environmental impacts of these extreme events.
  • (c) Learn about the Clean Water Act. Make notes on when it was passed, its environmental goals, what progress has been made and what remains to be done to achieve the law's goals. Describe the impact, benefits, and costs of the law as well as what is required to implement and enforce the law.

5. Land Pollution. Do ONE of the following and discuss with your counselor:
  • (a) In an area (yard, park, golf course, farm, etc.) approved by your counselor, make a list of the pesticides, herbicides, and fertilizers used and how often they are applied. Identify the benefits of their use and the environmental impact, including effects on non-target species (including humans), what happens if the chemicals infiltrate into the groundwater, and what happens to any runoff of the chemicals.
  • (b) Learn about the erosion process and identify an example of where erosion occurs. Determine where the eroded material ends up and how erosion can be minimized.
  • (c) Learn about a land pollution incident that led to a site being listed on Environmental Protection Agency's Superfund National Priority List. Identify what caused the incident, what the effects were on the environment, what remediation has been done, and the current condition of the site.

6. Rare, Threatened, or Endangered Species. Do ONE of the following and discuss with your counselor:
  • (a) Do research on one endangered species found in your state. Learn about its natural habitat, why it is endangered, what is being done to preserve it, and how many individual species are left in the wild. Prepare a 100-word report about the species and include a drawing or photo. Present your report to your patrol or troop.
  • (b) Do research on one species that was endangered or threatened but that has now recovered. Learn about how the species recovered, and what its new status is. Prepare a 100-word report on the species and include a drawing or photo. Present your report to your patrol or troop.
  • (c) With your parent or guardian and counselor's approval, work with a natural resource professional to identify a completed project that has been designed to improve the habitat for a threatened or endangered species in your area. Visit the site and report on what you saw to your patrol or troop.

7. Pollution Prevention, Resource Recovery, and Conservation. Do ONE of the following and discuss with your counselor:
  • (a) Determine five ways to conserve resources or use resources more efficiently in your home, school, or camp. Practice at least two of these methods for at least one week.
  • (b) Explain Resource Recovery and why it is important to reduce pollution. Collect samples or take photos of ten items that can demonstrate the principle of Reduce, Reuse, Recycle. Explain your collection, how these materials are currently handled, and potential improvements.
  • (c) Identify five items in your household that will become hazardous waste. Explain how they should be properly stored, what special care is needed for disposal, and proper disposal options available in your area.

8. Pollination. Do ONE of the following and discuss with your counselor:
  • (a) Investigate pollination and its importance to our environment and ecosystems. Make a list of five pollinators and the plants that attract them in your region. Explain the importance of pollinators and what Scouts can do to support pollinators in their area.
  • (b) Visit an area with flowering plants during pollination season for an hour to observe pollination. Record which pollinators are attracted to which plant. Explain the importance of pollinators and what Scouts can do to support pollinators in their area.
  • (c) Learn about the importance of pollination to agriculture, including the economic costs and benefits. Identify four crop-pollinator pairs. Explain the relationship of pollinators to agriculture.

9. Invasive Species. In your community or camp, investigate two invasive plant or animal species. Learn where the species originated, how they were transported to this ecosystem, their life history, how they are spread, how they impact the native ecosystem, and the recommended means to eradicate or control their spread. Discuss what you learned with your counselor.
10. Identify the environmental impact topics that would need to be addressed for a construction project such as building a house, adding a new building to your Scout camp, or one you create on your own that is approved by your counselor. Evaluate the purpose and benefit of the proposed project, alternatives (including a no-action alternative), and any environmental consequences. Discuss with your counselor.
11. Identify three career opportunities that would use skills and knowledge in the environmental science field. Pick one and research the training, education, certification requirements, experience, and expenses associated with entering the field. Research the prospects for employment, starting salary, advancement opportunities and career goals associated with this career. Discuss what you learned with your counselor and whether you might be interested in this career.

Get the Environmental Science Merit Badge Pamphlet

From learning about the history of Environmental Science in the United States to discovering our impact on the earth’s air, water and land from our actions, this digital merit badge pamphlet walks Scouts through all the information they need to earn the Environmental Science merit badge!

Discover more about "Environmental Science"

Scouts serve their communities in many ways. One popular way involves picking up litter, thereby keeping their hometowns, parks and local environments clean. Some of these efforts are global, while others have been part of awards. Every Star Scout seeking to advance to the next rank must contribute six hours of service, at least three of which must be conservation related. But what exactly does “conservation-related” mean? Does it include picking up trash?
More than two decades after earning the Environmental Science merit badge, Eagle Scout Jonathan Marchal still remembers the hours he had to spend observing nature (to which he had not looked forward). “It was an incredible experience to just sit quietly in the woods,” he says. “I’m thankful that I was made to do it.” Experiences like that eventually led him to become an environmental educator. As the youth education manager at the North Carolina Arboretum in Asheville, he is now teaching the Environmental Science merit badge to a new generation of Scouts. Here are his tips for other counselors. Give Scouts Tools The study-plot requirement (requirement 4) doesn’t specify which tools, other than a journal, Scouts should take into the woods. Marchal likes to equip them with more, including field guides, binoculars, tape measures and other tools. “A really fun one is an aspirator,” he says. Something like a siphon, this device allows a Scout to suck small spiders and other objects into a jar without getting them in his mouth. “It’s a little more hands-on if you’ve got something for them to manipulate and mess around with,” he says. “And it serves as an opportunity to talk about field study and professional science, and what professional scientists use.” Make Connections Marchal likes to connect the study-plot requirement with requirement 5, in which Scouts must consider the environmental impact of a proposed construction project. For example, he’ll suggest the construction project might be a new classroom building at one of the study-plot sites. “That way, they’re familiar with all the plants and animals that are there,” he says. “If we can, we’ll go back to it and do the hypothetical construction project while we’re there so we can really visualize the erosion that might occur and that sort of thing.” Keep It Local Requirement 3 involves a series of experiments on everything from ecology to endangered species. Whenever possible, Marchal links those concepts with what’s happening locally. For example, one experiment deals with the impact of thermal pollution on aquatic life, so Marchal talks about nearby Lake Julian, which holds water discharged from a power plant. “A lot of kids know that that lake is crazy warm, but not a lot of them know why,” he says. Similarly, after doing an experiment to test for particulates, he’ll talk about the particulates found in smoke. “We talk about how we like gas in our lungs, not solids,” he says. Point to the Future Marchal always promotes environmental careers (requirement 6). “I don’t know that I sat in the forest [as a Scout] and decided I was going to be an environmental educator, but Scouting definitely played a big, big role in what I ultimately decided was going to be my career,” he says. “I feel very fortunate that I was involved in Scouting.”

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