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 Marineair pollution monitoringglobal warmingandroidair qualityoutdoorsenvironmentusaair quality indexappparticulate mattersmartphone applicationcarbon dioxidehikingmobile applicationclimate monitoringsummerwinterinvestigationec2020iphoneair pollutioncarbon monoxidenatureexperimentdatabasecommunity-based monitoringweatherdataweather dataenvironmental justicestemairspringgirl scoutsscienceautumnclimate changebicyclingcitizen scienceequityclimate

SPOTTERON GmbH

BiciZen

BiciZen is a platform to make cities more bikeable.

Anywhere

Ongoing

Citizen ScienceTransportationEducationEcology & Environmentcyclingcitybikingcitiescyclistscitizen sciencebikeroad safety

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 ScienceMathematicsPhysicsRoboticsebikecapstone projectafterschoolfabricationbicycleev

Phoenix Public Library

Phoenix Public Library: Bike Lab

Phoenix Public Library - Harmon Library Arizona

May 9, 2026 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.