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://swling.com/blog/2026/03/shelfmarks-and-shortwave
The SWLing Post is a dedicated blog covering shortwave listening, ham radio, DXing, SDR technology, and radio broadcasting from around the world. With reviews, program schedules, equipment guides, and community contributions, it's a rich hub for radio enthusiasts of all stripes.
https://enolagaia.com/at.html
Dr. Randall Whitaker's Observer Web is a comprehensive academic resource dedicated to autopoiesis and enaction, covering the cognitive biology theories of Humberto Maturana and Francisco Varela. It offers a tutorial, study plan, bibliography, encyclopaedia, and internet guide for anyone exploring second-order cybernetics, radical constructivism, and enactive cognitive science.
https://departments.bucknell.edu/biology/resources/msw3
Hosted at Bucknell University, this online database presents the complete third edition of 'Mammal Species of the World' (MSW3), edited by Don E. Wilson and DeeAnn M. Reeder, covering taxonomic and geographic reference data for all recognized mammal species. Researchers and enthusiasts can browse the full hierarchy from Order down to Subspecies, search by scientific or common name, and even export the entire taxonomy as a CSV file.
https://rammb-data.cira.colostate.edu/tc_realtime
Run by NOAA's Regional and Mesoscale Meteorology Branch at Colorado State University, this site tracks currently active tropical cyclones worldwide in real time using satellite imagery and meteorological data. Researchers and weather enthusiasts can browse live storm data, archived seasons going back to 2006, and products developed by NESDIS/STAR/RAMMB scientists.
http://csgnetwork.com/hamfreqtable.html
CSGNetwork's Amateur Radio Frequency Table is a comprehensive reference listing all US ham radio band allocations, including mode restrictions, calling frequencies, and licensing class privileges across bands from 160 meters to microwave. Part of a larger calculator and reference site, it also links out to related frequency tables for CB, FRS, marine VHF, cellular, and cordless phone bands.
https://pcars.org/wp
The Platinum Coast Amateur Radio Society (PCARS, callsign W4MLB) is a Florida non-profit club serving amateur radio operators in central and southern Brevard County for over 60 years. The site covers club membership, monthly meetings, the Melbourne Hamfest, VE licensing exams, ARRL Field Day, emergency nets, local repeaters, and mentorship resources for hams at every experience level.
https://qsl.net/ve6ria
A QSL.net-hosted page belonging to the amateur radio operator with callsign VE6RIA, a Canadian ham radio licensee. The site appears to be a personal radio operator page on the popular QSL.net hosting platform for ham radio enthusiasts.
https://wh6ko.net/
Karen and Kevin's personal homepage chronicles their amateur radio adventures as licensed operators WH6CWD and WH6KO, originally from Hawaii and now settled in Oregon. The site blends ham radio content with personal memories, pet photos, and snapshots of Pacific Northwest life including multiple winters of notable snowfall.
https://siriuslookers.org/
Sirius Lookers is a free, dues-free amateur astronomy club based in Sedona, Arizona, welcoming anyone with an interest in looking up at the night sky. The site lists monthly meeting schedules at the Sedona Public Library, upcoming star parties, viewing locations, moon phases, and links to dark sky resources and other astronomy clubs.
http://weather.mailasail.com/Franks-Weather/Home
Frank Singleton's extensive weather and sailing resource covers marine meteorology, GRIB files, GMDSS services, weather communications, and practical forecasting guidance for sailors and cruisers. With cruising logs dating back to 2000, links to national weather services, and coverage of topics from basic atmospheric theory to climate change, this site is a remarkably thorough reference for anyone navigating at sea.