HabitatMap

AirCasting

Crowdsource air quality data & clear the air!

Anywhere

Ongoing

Citizen ScienceEducationEcology & EnvironmentComputers & Technologyarduinoheart rateandroidlibraryappcsm2026air qualitynoisepollutionearth2025air-qualitycsm2025air pollution

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 Marineweather datacommunity-based monitoringandroidec2020smartphone applicationmobile applicationclimate monitoringspringenvironmental justiceparticulate matteriphonenatureoutdoorsscienceexperimentairair pollutioncitizen scienceautumnair qualityair quality indexsummerbicyclingstemusagirl scoutsenvironmentdatabaseair pollution monitoringcarbon dioxideinvestigationcarbon monoxideweatherglobal warmingwinterhikingclimatedataappequityclimate change

Natural History Museum

Big Seaweed Search

Explore the distribution of UK and invasive seaweeds.

Multiple locations, including yours!

Ongoing

Citizen ScienceOcean Water MarineEcology & EnvironmentClimate & WeatherNature & OutdoorsBiologyseaweedsseashoreocean conservationtidepoolocean & waterat the beachrockpoolinvasivebeach walkseamarineoceanukseaweedbeachin oceans

Daily Live Science Demonstrations

Join us at the PECO Live Science Stage in the main Atrium and Demonstration Theater on the third floor for dynamic shows happening throughout the day from 11am to 4pm!

Philadelphia, Pennsylvania

Ongoing

Live ScienceBiologyChemistry

Tohono Chul

Tohono Chul: Curator’s Talk | SONORAN HOURGLASS – Ablaze the Brilliant Sun

Tohono Chul Arizona

May 21, 2026 at 7:00 AM

CommunityGeneral Science