<div class="alert alert-info" role="alert">Public Lab is currently featuring the following topics, listed here alphabetically: </div>

[Agriculture](/tag/agriculture) | 
[Air quality](/tag/air-quality) | 
[Climate change](/tag/climate-change) | 
[Disaster response](/tag/disaster-response) | 
[Indoor air quality](/tag/indoor-air-quality) | 
[Land use](/tag/land-use) | 
[Lead](/tag/lead) | 
[Microplastics](/tag/microplastics) | 
[Noise](/tag/noise) | 
[Odor](/tag/odor) | 
[Oil and gas](/tag/oil-and-gas) | 
[Soil](/tag/soil) | 
[Stormwater](/tag/stormwater) | 
[Transportation](/tag/transportation) | 
[Waste](/tag/waste) | 
[Water quality](/tag/water-quality) | 
[Wetlands](/tag/wetlands)

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Some of these topic pages are incomplete or don't yet exist, but we're working collaboratively to organize this open knowledge base. If you're interested in helping out, see this [guide to writing a topic page on PublicLab.org](/notes/warren/03-22-2019/writing-a-topic-page-on-publiclab-org).

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<div class="alert alert-info" role="alert">There's a lot more activity and information on publiclab.org beyond these featured Topics, and we use tags to organize community knowledge under common themes. View all tags on the <a href="https://publiclab.org/tags">Tag Page</a> </div>

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The table below offers another view of Topics, this time by major topics and the subtopics. Perhaps this might help you find what you are looking for or what you are looking to contribute! Read on...

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| Major topics | Subtopics |
|------|------|
| [Water](/water-quality) | [drinking-water](/drinking-water) <br> [fracking](/fracking) <br> [microplastics](/microplastics) <br> [lead](/lead) <br> [mining](/mining) <br> [agriculture](/agriculture) <br> [oil-and-gas](/oil-and-gas)<br> [filters](/filters) |
| [Soil](/soil) | [lead](/lead) <br> [mining](/mining) <br> [agriculture](/agriculture) <br> [oil-and-gas](/oil-and-gas) |
| [Air](/air-quality) | [indoor-air](/indoor-air) <br> [formaldehyde](/formaldehyde) <br> [dust](/dust) <br> [particulate-matter](/particulate-matter) <br> [oil-and-gas](/oil-and-gas) <br> [transportation](/transportation) <br> [filters](/filters) |
| [Industry](/industry) | [land-use](/land-use) <br> [land-change](/land-change) <br> [particulate-matter](/particulate-matter) <br> [oil-and-gas](/oil-and-gas) <br> [transportation](/transportation) <br> [mining](/mining) <br> [agriculture](/agriculture) <br> [waste](/waste) <br> [noise](/noise) <br> [chemicals](/chemicals) <br> [pipeline-monitoring](/pipeline-monitoring) <br> [cafo](/cafo) |
| [Climate](/climate) | [stormwater](/stormwater) <br> [land-change](/land-change) <br> [particulate-matter](/particulate-matter) <br> [oil-and-gas](/oil-and-gas) |
| [Organizing](/organizing) | [advocacy](/advocacy) <br> [community-organizing](/community-organizing) <br> [legal](/legal) <br> [public-comment](/public-comment) <br> [host-an-event](/host-an-event) |
| [Monitoring](/monitoring) | [air-sensors](/air-sensors) <br> [water-sensors](/water-sensors) <br> [balloon-mapping](/balloon-mapping) <br> [study-design](/study-design) <br> other [methods](/methods) |