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Events for April 16, 2026

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Greater Phoenix City Nature Challenge 2026: Acts of Science – Connected − Play Stall Catchers Online

Online

Help accelerate research on Alzheimer’s disease by playing a video game. All you need is curiosity. Featured Project: Stall Catchers During this virtual event, you'll look at images of blood flow in the brain and mark whether vessels are flowing or stuck. Every image you review helps researchers analyze data faster and move research forward! Hear...

Free
phoenix public library south mountain

Phoenix Public Library: Game Night for Science – Play Stall Catchers Online

Phoenix Public Library - South Mountain Community Library 7050 S. 24th St., Phoenix

Participants will play Stall Catchers, a research-based online game that helps scientists identify blocked blood vessels in the brain. These classifications support ongoing Alzheimer’s disease research and help accelerate discovery.

Free

maricopa county parks and recreation hassayampa river preserve

Maricopa County Parks and Recreation: City Nature Challenge Practice Hike

Hassayampa River Preserve 49614 U.S. Hwy. 60 89, Wickenburg

Learn about the April 24-27 City Nature Challenge and free smartphone apps that can help you identify plants, animals, and more, while helping contribute to science!   Join Ranger Eric on an easy 0.4-mile walk on Lions Trail while we learn about the free iNaturalist app you can use to identify any living organism on the...

Free with Park Fee