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co2
within 25 miles
Feb 2, 2026
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 Marinehikingairair pollutionequitycommunity-based monitoringair pollution monitoringcitizen scienceappoutdoorscarbon monoxidegirl scoutsclimate monitoringweather dataenvironmental justiceair qualitydatamobile applicationstemair quality indexec2020carbon dioxideclimatesciencenatureusaweatherclimate changeautumnwintersmartphone applicationsummerspringglobal warmingdatabaseenvironmentandroidiphoneparticulate matterbicyclinginvestigationexperiment

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologymappinggreat britiantreeecologytreesgreat britainecologukenvironmentmap
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