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co2
within 25 miles
Sep 15, 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 Marineparticulate mattergirl scoutscitizen scienceclimate monitoringusadataair pollutionair pollution monitoringenvironmental justicestemsmartphone applicationinvestigationsummerglobal warmingec2020appweather datawinterclimatecarbon monoxidehikingoutdoorsexperimentequityairautumnnatureenvironmentweatherandroidair qualitycommunity-based monitoringair quality indexclimate changemobile applicationiphonebicyclingsciencecarbon dioxidespringdatabase

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologygreat britainecologmappinggreat britianuktreesenvironmenttreemapecology
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