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://carolinabirds.org/
Created by Dick and Sandy Daniels, this site functions as a comprehensive online field guide covering over 10,000 bird species organized by genus and family, making it easy to compare related birds side by side. Entries span every major region of the world including North America, South America, Europe, Asia, Africa, and Australia, with links to additional information for each species.
http://bo.astro.it/~biblio/atlas/atlas-in.htm
Hosted by the Library of the Department of Astronomy in Bologna, this scholarly site guides visitors through a curated collection of historic celestial atlases spanning the 16th through 18th centuries, from Piccolomini's Renaissance star maps to Bode's Uranographia. Created by Davide Neri, a philosopher and physicist, it beautifully bridges the history of science and art through some of the most celebrated astronomical cartography ever published.
https://bacteria.icu/
Stanislaus runs this enthusiastically nerdy site dedicated to prokaryotes and bacteria, complete with a gallery, wiki, and guestbook hosted on Neocities. The playful 'Bacteria Intensive Care Unit' theme and self-described obsession with microbiology make it a charming corner of the web for fellow microbe enthusiasts.
https://w1cdn.net/
W1CDN documents ham radio adventures with hands-on technical posts covering packet radio, homebrew builds, APRS digipeaters, and radio orienteering projects. The site features detailed notes on software configurations like direwolf and flrig, DIY hardware builds including a powered speaker and homebrew power meter, and practical guides for operating on various bands.
https://nzart.org.nz/nzart
The New Zealand Association of Radio Transmitters (NZART) is the national membership organization for amateur radio operators in New Zealand, offering licensing guidance, study resources, exam information, and emergency communications coordination through its AREC volunteer network. With over a century of history leading up to its 2026 centenary, the site includes band plans, repeater maps, branch directories, and the association's long-running publication Break-In.
http://ve7sl.blogspot.com/
VE7SL is Steve's amateur radio blog chronicling his homebrewing projects and on-air adventures across an extraordinary range of frequencies, from 2200 meters all the way up to nanowaves. Posts dive deep into technical details like antenna construction, low-band operating on 630m, and solar propagation data, making it a rich resource for experimentally-minded hams.
https://qsl.net/kd6ngy
A personal amateur radio page for callsign KD6NGY, hosted on the QSL.net amateur radio web server. The page appears to rely on a Java applet for its main content, which is no longer accessible in modern browsers.
https://qsl.net/sandra/APRS_primer.html
A focused primer on APRS (Automatic Position Reporting System) for the San Diego area, explaining how the technology uses GPS and two-meter radio to track vehicles, search and rescue teams, ships, and aircraft. Hosted on QSL.net and maintained by the San Diego Repeater Association, the page collects key links for getting started with APRS including software downloads, station locators, and local elmers.
https://his.com/~jrusso/ham.html
Jim and Karen's joint ham radio page for callsigns W4KRN and K4JJR features their station setup, ham radio links, and a reference to the Dayton 2000 hamfest. The site also participates in the Amateur Radio Webring and includes a local weather widget for Warrenton, Virginia.
http://nightskylive.net/sd
NightSkyLive appears to be a live sky or astronomy viewing resource, likely offering real-time or streaming views of the night sky. The domain and subdirectory suggest a science-focused project aimed at stargazers and astronomy enthusiasts.