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co2
within 25 miles
Sep 10, 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 Marinecommunity-based monitoringandroidclimateweather datadatascienceappoutdoorswinterspringair quality indexequityglobal warmingairautumnhikingair pollutionmobile applicationweathersmartphone applicationsummerparticulate mattercarbon dioxideec2020citizen scienceclimate monitoringenvironmental justicenatureinvestigationcarbon monoxideiphoneusaair qualityclimate changedatabasestemexperimentbicyclingair pollution monitoringgirl scoutsenvironment

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologygreat britainenvironmentgreat britianecologmappingecologyuktreesmaptree
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