co2

within 25 miles

Apr 30, 2025

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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 Marinecitizen scienceweathernaturestemclimate monitoringdatadatabaseclimateair pollutionclimate changeoutdoorscarbon monoxideautumnhikingair qualityusawintercarbon dioxideparticulate mattersummerair quality indexec2020appandroidair pollution monitoringiphonebicyclinginvestigationequitysmartphone applicationweather dataairenvironmentcommunity-based monitoringglobal warminggirl scoutsenvironmental justicespringmobile applicationexperimentscience

NC State University | ecoipm.org | YourWildLife.org

A Tree's Life

To learn how climate & urbanization affect tree growth & health

Multiple locations, including yours!

Ongoing

Citizen ScienceBiologyEducationClimate & WeatherNature & OutdoorsEcology & Environmentclimate changetreesurban ecologycarbon sequestration

Dr. Kevin Gurney

Hestia Traffic App

To improve the data of on-road CO2 emissions

Multiple locations, including yours!

Ongoing

Citizen ScienceClimate & WeatherEcology & EnvironmentTransportationemmisionclimatepollution

TreeMama.org

iSeaTree

Help resource managers study and record the benefits of urban trees!

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentNature & OutdoorsGeographycitymapsparkclimate changeplantwoodsandroidleafurban treescarboniphonetreesh2oipadclimatetreechangecitiesidentificationco2artificial intelligencecanopyaiforesturbanapp

It's TreeTime Tempe!

Record location and details of local trees

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsEcology & Environmenturban forestarboristtreesneighbourhoodmapping

Neighbourwoods - Broward County, FL

Record location and details of local trees

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsEcology & Environmentarboristtreesneighbourhoodurban forestmapping

IQAir AirVisual

PM2.5 air pollution monitoring

Better understand air pollution and its sources, indoors and out

Anywhere

Ongoing

Citizen ScienceHealth & MedicinePolicyClimate & WeatherNature & OutdoorsCrowd FundingTransportationEducationoutdoorairtrafficair qualitysmogburn banair pollutantsasthmahighwaysco2carbonenvironmentindoordustdatacarspm2.5wood burningair pollutionhealthventilationemissionsmonitoring