Science & Nature
1439 sites
Subcategories:
- Astronomy & Space (396)
- Chemistry (8)
- Earth Sciences (26)
- Biology (79)
- Physics (30)
- Mathematics (59)
- Weather & Climate (104)
- Amateur Radio (682)
- Electronics (47)
https://pi4cc.nl/
PI4CC Contest Club is a Dutch amateur radio club operating from a World War II bunker at Hoek van Holland since 1993, specializing in HF multi-operator contest entries. The site offers a detailed station tour, antenna specifications, contest stories, DX-trip logs, and member information for this technically impressive homebrew contest station.
https://nsml.org/
The North Suburban Math League (NSML) organizes competitive math meets for Chicago-area high schools, with five competitions held throughout the school year. The site provides contest archives, meet schedules, written and oral topic lists, coach resources, and a history of NSML alumni who have earned medals at the International Mathematical Olympiad.
http://webmineral.com/danaclass.shtml
Webmineral presents a comprehensive classification of mineral species based on Dana's New Mineralogy, organizing over 78 mineral classes from Native Elements to Unclassified Silicates. This detailed reference resource covers the full spectrum of mineralogy including sulfides, oxides, halides, carbonates, and silicates, making it an invaluable tool for geologists, mineralogists, and earth science enthusiasts.
https://ifmarc.org/
IFMARC is the official web presence of the Independence FM Amateur Radio Club based in Independence, Missouri, home of the 147.09+ repeater carrying the call sign of late club member Marcell Kurbin (W0TOJ). The site lists club officers, meeting details at St. Mark's United Methodist Church, and contact information for joining the club's email list.
http://ibiblio.org/pub/academic/agriculture/agronomy/ham/BOATANCHORS
Hosted on ibiblio, this is an archive of the Boatanchors mailing list digests, covering vintage and antique radio equipment collecting and restoration. The archive spans hundreds of digest issues alongside FAQs, welcome files, and supplementary resources for enthusiasts of classic tube-based radio gear.
http://citynight.com/atv
The personal amateur radio station page of WA6ZJG, operated from Alameda, California in the San Francisco Bay Area, with a focus on Amateur Television (ATV) operations. Visitors can find station information, ATV repeater live video captures from W6CX, announcements, and ham-related links.
http://www.berksastronomy.org/
The Berks County Amateur Astronomical Society (BCAAS) is a Pennsylvania-based astronomy club hosting monthly meetings, star parties, and online AstroHangouts via Zoom for space enthusiasts. The site features clear sky clocks for local observing sites including Pulpit Rock Astronomical Park and Carpenter Observatory, plus a club newsletter called Pegasus.
https://reflector.org/
The Springfield STARS is an amateur astronomy club based in Western Massachusetts, holding monthly meetings at the Springfield Science Museum from September through May. Visitors can find astronomy articles, outreach events, and club meeting details, making it a welcoming hub for stargazers in the region.
https://arcadianabe.blogspot.com/
Wild Harvests is T. Abe Lloyd's foraging blog focused on wild food experiments and plant identification in the Pacific Northwest, particularly Northwest Washington and Southern Vancouver Island. Posts cover edible plants like bulrush and beach pea, wetland ecology field courses, and hands-on accounts from decades of regional botanical study.
https://w5yi.org/
W5YI Licensing Services Inc. is a nationwide Volunteer Examiner Coordinator (VEC) offering full-service amateur radio licensing support, including exam sessions, vanity call sign applications, license renewals, and club station licenses. The site also features a youth licensing program that covers FCC fees for applicants aged 25 and under, making it a practical hub for anyone pursuing or maintaining a ham radio license.