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 Marinedataair qualityairglobal warmingmobile applicationwinterdatabasegirl scoutsscienceair pollution monitoringbicyclingclimate monitoringstemcarbon monoxideair pollutioncitizen sciencespringequityparticulate matterclimate changeoutdoorsautumnsummerenvironmentnatureclimatecarbon dioxideandroidusahikingiphoneappinvestigationweatherexperimentair quality indexcommunity-based monitoringweather dataenvironmental justiceec2020smartphone application

SPOTTERON GmbH

BiciZen

BiciZen is a platform to make cities more bikeable.

Anywhere

Ongoing

Citizen ScienceTransportationEducationEcology & Environmentcitiesroad safetycyclistsbikingcitycitizen sciencecyclingbike

Athenian

e-Bike Conversion Project Workshop

Showcase your talents for fabrication, engineering and design by converting your bicyle to an e-bike. The perfect portfolio project to talk about in college essays.

Anywhere

Ongoing

CampClubMakerTinkerCreate-a-ThonHack-a-ThonMake-a-ThonProfessional DevelopmentTrainingWorkshopArtComputers & TechnologyEngineeringTechnologyTransportationDesignEducationGeneral ScienceMathematicsPhysicsRoboticscapstone projectbicycleafterschoolevebikefabrication

Maricopa County Parks and Recreation

Maricopa County Parks and Recreation: Ride with a Ranger!

McDowell Mountain Regional Park Arizona

November 8, 2025 at 7:00 AM

CommunityGeneral Science

SportsZone

SportsZone is a new permanent exhibition that explores how sport connects the science of the human body, laws of motion, and technical innovation.

Philadelphia, Pennsylvania

Ongoing

CompetitionExhibitionHealth & Medicine

SafeTREC, UC Berkeley

Street Story: Give Your Input on Safe Streets

Collect and provide information about community members’ experiences using transportation networks.