Environmental Science ยท Resources, Climate & Justice

Some Detroit blocks are hotter, and some air harder to breathe.

The 48217 zip code in Southwest Detroit is regularly cited as one of the most industrially exposed areas in Michigan, while vacant, unshaded lots elsewhere in the city can run several degrees hotter than tree-covered blocks a mile away. This unit covers resource use, human impact, and environmental justice using real, mappable Detroit data.

NGSS Standards Addressed High School

  • HS-ESS3-1 Construct an explanation based on evidence for how the availability of natural resources, occurrence of natural hazards, and changes in climate have influenced human activity.
  • HS-ESS3-3 Create a computational simulation to illustrate the relationships among management of natural resources, sustainability of human populations, and biodiversity.
  • HS-ESS3-4 Evaluate or refine a technological solution that reduces impacts of human activities on natural systems.
  • HS-ESS3-6 Use a computational representation to illustrate the relationships among Earth systems and how those relationships are being modified due to human activity.

NGSS Standards Addressed Middle School

  • MS-ESS3-1 Construct a scientific explanation based on evidence for how the uneven distribution of Earth's resources affects human activity.
  • MS-ESS3-3 Apply a design solution for monitoring and minimizing a human impact on the environment.
  • MS-ESS3-4 Construct an argument supported by evidence for how increases in human population and per-capita consumption affect Earth's systems.
  • MS-ESS3-5 Ask questions to clarify evidence of the factors that have caused the rise in global temperatures over the past century.
Warm-Up

Bell-Ringers

Project one at the start of class. Each has a click-to-reveal discussion note. More formats (Notice and Wonder, CER, Fact or Fiction, and more) are in the Bell-Ringer Bank.

๐ŸŒก๏ธ Housing

On a hot summer afternoon, a paved lot with no trees can be 10โ€“15ยฐF hotter than a nearby tree-lined block โ€” even in the same neighborhood. What causes this "urban heat island" difference at such a small scale?

Discussion notes
Dark, impervious surfaces (asphalt, roofs) absorb more solar radiation and re-radiate it as heat, while trees provide shade and release water vapor through transpiration, which cools the surrounding air. Vacant lots and low tree canopy โ€” common in parts of Detroit โ€” remove that natural cooling, creating measurable, block-by-block temperature differences.
๐Ÿญ Technology

Southwest Detroit's 48217 zip code sits near a major oil refinery, an incinerator, and heavy truck traffic to the Ambassador Bridge. Why would living near several industrial sources at once matter more than living near just one?

Discussion notes
This is "cumulative impact" โ€” multiple pollution sources overlapping in the same area can combine to exceed what any single source's permit accounts for individually, even if each source is technically within its own legal limit. Environmental justice analysis looks at total, combined exposure rather than one facility at a time.
๐Ÿ’ง Water

Detroit's sewer system combines stormwater and wastewater in some areas. During heavy rain, this can cause combined sewer overflows into the Detroit River. Why would climate change, which is expected to increase heavy rainfall events in the Great Lakes region, make this a growing problem?

Discussion notes
More frequent intense rainfall sends more water into the system faster than it can be treated, increasing how often untreated overflow discharges into the river. This connects climate change (a shift in precipitation patterns) directly to a local water-quality and infrastructure problem, showing how Earth systems and human systems interact (HS-ESS3-6).
๐ŸŒก๏ธ Housing

On a hot day, a paved parking lot can feel much hotter than a grassy park nearby, even though the sun shines equally on both. Why?

Discussion notes
Dark pavement absorbs a lot of the sun's energy and turns it into heat, with no shade or water to cool things down. Grass and trees reflect more light, provide shade, and release water vapor that cools the air around them โ€” so the two surfaces end up at very different temperatures.
๐Ÿญ Technology

Southwest Detroit sits near several factories and heavy truck traffic. If a neighborhood has more than one pollution source nearby, why might that be worse than living near just one?

Discussion notes
The pollution from each source adds up. Even if each factory or road follows its own rules, breathing air affected by several sources at once means a person's total exposure is higher than any single source alone would suggest.
๐Ÿ’ง Water

During heavy rainstorms, Detroit's sewer system sometimes releases untreated water into the Detroit River. Why might rainstorms be becoming a bigger problem for water quality as the climate changes?

Discussion notes
Scientists expect climate change to bring more frequent and more intense rainstorms in this region. More water arriving faster overwhelms the sewer system more often, so the untreated overflow into the river happens more frequently too.
Hands-On

Labs

Mapping Environmental Justice: Heat & Air Quality in Detroit

โฑ๏ธ 50 min๐Ÿ‘ฅ Pairs๐Ÿ“Ž Data analysis & GIS thinking

Using Michigan's MiEJScreen tool and satellite map views, students compare two Detroit neighborhoods on air-related indicators and visible land use, then write an evidence-based explanation of what infrastructure and land-use differences might explain the gap.

Green Infrastructure Design: Rain Garden Challenge

โฑ๏ธ 45 min๐Ÿ‘ฅ Small groups๐Ÿ“Ž Stormwater & infiltration

Students design a rain garden or bioswale sized to absorb runoff from a model roof or parking lot, testing infiltration rate with different soil and plant setups to reduce combined sewer overflow risk.

Great Lakes Water Level Data Dive

โฑ๏ธ 40 min๐Ÿ‘ฅ Pairs๐Ÿ“Ž Data analysis & trends

Students graph decades of Great Lakes water level data, identify long-term trends and cycles, and connect fluctuations to climate patterns and shoreline infrastructure planning around Detroit.

Explore

Simulations

Original on The Lab

Urban Heat Island Explorer

Slide tree canopy and pavement coverage on a city block and see how afternoon temperature responds.

Launch Simulation →

The Greenhouse Effect

PhET Interactive Simulations โ€” model how atmospheric gases trap heat and compare pre-industrial to modern conditions.

Open Simulation โ†’

MiEJScreen (Michigan EGLE)

Michigan's public environmental justice mapping tool โ€” the core dataset for the heat-and-air-quality lab.

Open Tool โ†’

NOAA Great Lakes Water Levels

NOAA GLERL โ€” long-term, publicly available water level records for all five Great Lakes.

Open Data โ†’
Go Further

Project Ideas

Data project

Neighborhood Tree Canopy Audit

Compare tree canopy coverage across two or three Detroit neighborhoods using satellite imagery, and propose priority planting sites to reduce heat island effects.

Policy brief

Cumulative Impact Policy Proposal

Research how "cumulative impact" zoning policies work in other cities and write a brief evaluating whether one could apply to Southwest Detroit's industrial corridor.

Design challenge

Stormwater Retrofit for a City Block

Design a green-infrastructure retrofit (rain gardens, permeable pavement, tree planting) for a real or model Detroit block to reduce combined sewer overflow risk.

Field project

Neighborhood Temperature Walk

Use a thermometer to record temperatures at a parking lot, a park, and a sidewalk near school, then map your results and explain the pattern you find.

Design sketch

Redesign a Vacant Lot

Sketch a redesign of a vacant Detroit lot that adds shade, plants, and a way to soak up rainwater, labeling how each feature helps cool the block.

Poster project

Where Does Our Water Go?

Create a diagram tracing Detroit's water path from the Great Lakes to the treatment plant, to the tap, and back out through the sewer system to the river.

Assess

Show What You Know: Exit Ticket

Three quick questions to close the lesson. Answers are hidden until you click. Use Project Mode to display them full-screen.

Question 1

Give two reasons a paved, treeless lot is hotter than a nearby tree-lined block.

Answer
Dark paved surfaces absorb more solar energy and re-radiate it as heat, and there is no shade. Trees also cool the air through transpiration, which paved lots lack.
Question 2

What does 'cumulative impact' mean, and why can permits that look at one facility at a time miss it?

Answer
Cumulative impact is the combined effect of multiple pollution sources and stressors on a community. A permit may judge each facility alone, so the total exposure residents experience goes unmeasured.
Question 3

How does a rain garden reduce the chance of a combined sewer overflow?

Answer
It soaks up stormwater where it falls, so less runoff reaches the sewer during heavy rain. Smaller, slower peak flows are less likely to overwhelm the system.
Question 1

Why does a parking lot feel hotter than a nearby park on a sunny day?

Answer
Dark pavement absorbs and holds more of the sun's energy, and it has no shade or plants to cool it. Grass and trees reflect more light and release water vapor.
Question 2

Why can heavy rain send untreated water into the Detroit River in places with combined sewers?

Answer
Stormwater and wastewater share the same pipes. A heavy storm can fill the pipes faster than the treatment plant can handle, so the overflow is released.
Question 3

Name one action a neighborhood could take to cool its streets.

Answer
Plant trees, add gardens or green roofs, use lighter-colored pavement and roofs, or replace empty paved areas with plants.

View project rubrics →

Why Does This Matter?

Environmental science, built on Detroit

Housing

Block-by-block heat differences tied to vacant land and tree canopy loss make the urban heat island effect something students can measure near their own school, not just read about.

Technology

Southwest Detroit's industrial corridor near the Ambassador Bridge is one of the most studied environmental justice communities in the country, giving students access to real public data and research.

Water

As a Great Lakes city with an aging combined sewer system, Detroit's stormwater and river-quality challenges connect climate trends directly to local infrastructure decisions.

Energy

DTE Energy's ongoing shift from coal toward renewable and lower-carbon generation gives students a live case study in balancing resource use, cost, and emissions at city scale.

Careers

Who works on this in Detroit?

Real roles and organizations in and around the city where this science is part of the job.

Environmental scientist / regulator

Michigan EGLE, U.S. EPA Region 5

Monitors air, water, and soil and enforces rules that protect public health and ecosystems.

Urban forester / arborist

The Greening of Detroit, City of Detroit

Plants and maintains street trees to shade neighborhoods, cool the air, and manage stormwater.

Stormwater / green infrastructure engineer

Detroit Water and Sewerage Department, GLWA

Designs rain gardens, bioswales, and pipe upgrades that reduce combined sewer overflows.

Community air-quality advocate

Southwest Detroit Environmental Vision, Detroiters Working for Environmental Justice

Works with residents to gather data, share monitoring results, and push for cleaner neighborhoods.

Energy and climate analyst

DTE Energy and city sustainability teams

Models emissions, costs, and resource options as the region shifts toward cleaner power.