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co2
within 25 miles
Dec 26, 2025
9 opportunities found! use fewer search filter criteria to find more opportunities

2B Technologies, Inc.

AQTreks (AirQualityTreks)

Monitor air pollution levels and map air pollution around the US

Multiple locations, including yours!

  • Ongoing
Citizen ScienceNature & OutdoorsGeographyEducationCrowd FundingTransportationEcology & EnvironmentComputers & TechnologyClimate & WeatherChemistryOcean Water Marineair quality indexbicyclingcarbon monoxideclimateautumnexperimentairequityglobal warmingair pollution monitoringdatabaseparticulate matterscienceappwinterspringweatherenvironmentcitizen sciencegirl scoutsclimate monitoringweather dataair qualityec2020air pollutionsummerandroidclimate changemobile applicationhikingstemsmartphone applicationinvestigationdatanatureusaiphoneoutdoorsenvironmental justicecarbon dioxidecommunity-based monitoring

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologymapuktreesecologygreat britianenvironmentgreat britainecologtreemapping
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