EarthCache
A free, worldwide geology-focused offshoot of geocaching, developed with the Geological Society of America. Participants use GPS coordinates to visit geologically significant real-world sites, answer earth-science questions about what they observe, and can complete self-paced EarthCache Academy lessons on topics like geologic time, fossils, and earthquakes.
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Earth Science Week Contests (AGI)
Annual national contests held during Earth Science Week (mid-October), sponsored by the American Geosciences Institute. Students enter the photography, video, visual arts, or essay contest with work tied to that year's Earth Science Week theme.
Rockd Citizen Science Geology App
A free mobile app from the University of Wisconsin's Macrostrat project that lets users pull up geologic maps anywhere on Earth and log field observations, such as rock and fossil IDs and strike-and-dip measurements, contributing to an open geoscience database.
AGU Bright STaRS
American Geophysical Union program inviting middle and high schoolers worldwide to present original Earth and space science research, including earthquake and seismology topics, as a poster at AGU's Annual Meeting, with complimentary conference registration included.
San Bernardino County Museum Earth Sciences Volunteer Program
San Bernardino County Museum's Earth Sciences volunteer program lets students age 15 and up assist in the museum's active fossil prep lab, digitize and inventory the paleontology collection, and interact with visitors about fossils. It is a free, ongoing volunteer opportunity requiring at least 6 hours per month after a background check and orientation.
Weather Archive Africa (Zooniverse Citizen Science)
A virtual citizen-science project where volunteers help digitize and quality-check historical African weather station records from paper archives, supporting climate change research across 43 African countries. Students transcribe station names, dates, and readings, and flag damaged documents.
East Bay Mineral & Lapidary Club Youth Membership
An East Bay (Oakland-area) nonprofit rock and mineral club offering a discounted youth membership for students 17 and under. Youth members get full access to lapidary workshops, cutting/polishing classes, field trips to geological sites, and the club's annual gem and mineral show, alongside an accompanying adult member.