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co2
within 25 miles
May 22, 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 Marineweatherhikingparticulate matterweather datasciencenaturespringglobal warmingair qualitycarbon dioxideenvironmentcitizen scienceappoutdoorsinvestigationclimate changeair pollutionsmartphone applicationdatabaseclimateandroidec2020community-based monitoringstemdatacarbon monoxideexperimentautumngirl scoutsequityclimate monitoringwinterbicyclingenvironmental justicemobile applicationair quality indexusaair pollution monitoringsummerairiphone

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologymappingmapecologtreeecologyenvironmentgreat britainuktreesgreat britian
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