U.S. Environmental Protection Agency (EPA)

AirMapper: DIY Air Quality Monitoring

Monitor and understand local air quality

Anywhere

Ongoing

Citizen ScienceClimate & WeatherEcology & EnvironmentHealth & Medicinedata collectiondiymappingenvironmental monitoringair qualitystem educationair sensorsenvironmental scienceparticulate matteratmospheric sciencecommunity sciencesensorsair pollutioncarbon dioxide

The Riverfly Partnership

Anglers Riverfly Monitoring Initiative (ARMI)

early warning system for acute river pollution incidents

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentEducationAnimalsInsects & PollinatorsNature & OutdoorsClimate & WeatherOcean Water MarineBiologyriverfly partnershiparmiriverfliesriverfly monitoringkick samplingmacroinvertebrtesanglers riverfly monitoring initiative

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 Marinewinterairenvironmentweather dataclimate changecarbon dioxideusanatureandroidcitizen sciencebicyclingair quality indexglobal warmingdatastemautumnclimateclimate monitoringweatheroutdoorsmobile applicationexperimentair qualityiphoneair pollution monitoringequityair pollutioncommunity-based monitoringappspringsummergirl scoutsenvironmental justicesciencedatabaseinvestigationec2020particulate matterhikingsmartphone applicationcarbon monoxide

The Music Lab at Yale University

Are You a Super-Listener?

Determine ability to differentiate harmonic categories by ear.

Anywhere

Ongoing

Citizen ScienceSoundPsychologyyale music lab

Astronomy On Tap

Astronomy on Tap Leiden: The Universe’s Ghosts and Ripples

Culture Café Leidse Lente

October 26, 2026 at 7:00 PM through 9:00 PM

Community

Astronomy On Tap

Astronomy on Tap – Orlando Event #36: Red Planet Ice and the Asteroids Beyond

Bruder Brewery & Kitchen FL

November 6, 2026 at 12:00 AM through 2:00 AM

Community

Astronomy On Tap

Astro on Tap Victoria: The Golden Age of Astronomy & How to Build a Planet

The Vicious Poodle BC

November 20, 2026 at 2:00 AM through 4:00 AM

Community

Bird Conservation Network

Bird Conservation Network Survey

Help map bird distribution in the Greater Chicago region.

Illinois

Ongoing

Citizen ScienceEcology & EnvironmentBirdsAnimalsNature & Outdoorschicagoebirdillinois

British Trust for Ornithology

BirdTrack

Help researchers investigate migration of birds.

Anywhere

Ongoing

Citizen ScienceBiologyEcology & EnvironmentBirdsAnimalsNature & Outdoorsandroidbird migrationbirdwatchingcitizen sciencedragonfliesiphoneipadmigration phenologybird recordingunited kingdombirdbirdingmigrant birdsappbird watchingmammalsbirds of conservation concernireland

Pocket Science Citizen Science Apps (DDQ B.V.)

Black Hole Finder

Help astronomers to find and measure newly formed black holes

Anywhere

Ongoing

Citizen ScienceAstronomy & Spaceblackholesimaginguniverse

Filters

U.S. Environmental Protection Agency (EPA)

AirMapper: DIY Air Quality Monitoring

The Riverfly Partnership

Anglers Riverfly Monitoring Initiative (ARMI)

2B Technologies, Inc.

AQTreks (AirQualityTreks)

The Music Lab at Yale University

Are You a Super-Listener?

Astronomy On Tap

Astronomy on Tap Leiden: The Universe’s Ghosts and Ripples

Astronomy On Tap

Astronomy on Tap – Orlando Event #36: Red Planet Ice and the Asteroids Beyond

Astronomy On Tap

Astro on Tap Victoria: The Golden Age of Astronomy & How to Build a Planet

Bird Conservation Network

Bird Conservation Network Survey

British Trust for Ornithology

BirdTrack

Pocket Science Citizen Science Apps (DDQ B.V.)

Black Hole Finder

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