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co2
within 25 miles
Dec 24, 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 Marinestemautumniphoneinvestigationweather datasummerhikingair quality indexsmartphone applicationparticulate matterspringenvironmental justiceairequityweatherscienceair pollution monitoringwinterdatabasegirl scoutsenvironmentair qualitycommunity-based monitoringnaturecarbon monoxideandroidglobal warmingoutdoorsclimate changedataclimatecitizen scienceec2020climate monitoringbicyclingappair pollutioncarbon dioxideusaexperimentmobile application

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologyecologytreesenvironmentmapgreat britainmappinguktreeecologgreat britian
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