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)
http://twiar.org/
This Week in Amateur Radio (TWIAR) is a long-running news service delivering up-to-the-minute ham radio news via amateur repeaters, HF, shortwave, LPFM, and podcasting. Produced by Community Video Associates, Inc., it covers the latest developments in amateur radio technology, DX, satellites, and more, supported by listener donations.
http://fishpool.org.uk/
G4WIF shares a growing archive of home construction projects for amateur radio enthusiasts, covering topics like antennas, attenuators, and QRP test equipment. The site also references a co-authored book on simple test equipment for QRPers, with years of archived articles dating back to 2016.
https://www.qsl.net/pslara
The Port Saint Lucie Amateur Radio Association (PSLARA) is an ARRL-affiliated club serving licensed ham radio operators and enthusiasts in Port Saint Lucie, Florida. The site covers club meetings, repeater frequencies, emergency communications services, licensing classes, and VE testing sessions.
https://sites.utexas.edu/n5xu
The University of Texas Amateur Radio Club (UTARC) has operated under the callsign N5XU since its founding in 1921, making it one of the longest-running college radio clubs in the country. The site covers club meetings, local nets, repeater information, and resources for getting a ham radio license, with membership open to all UT-affiliated students, faculty, and staff at no cost.
https://www.qsl.net/smcara/club_members.html
The St. Mary's County Amateur Radio Association (SMCARA) has been supporting amateur radio operators in southern Maryland since 1956, and this page presents their full club membership roster with call signs, license classes, and ARRL/volunteer examiner status. With 62 members listed and resources for becoming a ham radio operator, the site offers a solid look at an active regional ham radio club.
https://panspermia.org/
Cosmic Ancestry is a deep-dive scientific resource exploring the theory of panspermia, arguing that life on Earth originated from space and that all evolutionary innovation depends on genetic material of cosmic origin. The site covers astrobiology, comets as delivery systems, interstellar dust, the work of Fred Hoyle and Chandra Wickramasinghe, and presents extensive evidence comparing Darwinism with the Cosmic Ancestry hypothesis.
https://zl2pd.com/index.html
Andrew Woodfield (ZL2PD) has built an extensive technical resource covering homebrew QRP transceivers, Si5351 VFO/BFO projects, antenna tuners, and DIY electronics for amateur radio operators. The site spans decades of original projects with detailed build guides, circuit diagrams, and modification instructions for portable HF SSB gear.
http://cogweb.ucla.edu/CogSci/ToMM.html
A scholarly resource from UCLA's CogWeb project exploring Theory of Mind (ToMM), the cognitive mechanisms humans use to attribute mental states like beliefs, desires, and intentions to others. Written by Francis F. Steen in 1997, it covers the groundbreaking work of Alan Leslie and Simon Baron-Cohen on autism, child development, and the evolutionary origins of mind-reading abilities.
https://ciura.tripod.com/index.html
Steve (KB9JWD) is a ham radio operator and trained weather spotter from Downers Grove, Illinois who built this page to share his twin passions for amateur radio and meteorology. Visitors will find links to SKYWARN spotter gear, the QRZ callsign database, amateur radio practice exams, local radio club pages, and weather resources.
https://mainearrl.org/
The official Maine Section page for the American Radio Relay League covers everything local hams need, including district info, repeater listings, emergency communications nets, and an upcoming hamfest convention in Augusta. Resources for mentors (Elmers), club listings, EMCOMM testing, and multiple nets like the Maine Seagull Net and Maine Public Service Net make this a practical hub for amateur radio operators across the state.