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://geo.mtu.edu/volcanoes
Hosted at Michigan Tech since 1993, this long-running volcano resource page gathers links to educational tools, research sites, webcams, and cultural materials related to volcanology from around the world. Visitors can explore active volcano feeds, teaching resources, folklore, myths, and interviews with real volcanologists, making it a rich hub for both students and enthusiasts.
https://www.qsl.net/cwra
The Central Wisconsin Repeater Association (CWRA) is a ham radio club based in the Madison/Baraboo area that owns and operates two 2-meter FM repeaters serving southern Wisconsin. Founded over 35 years ago, the site offers membership information, newsletters, board of directors details, and resources like FCC license renewal links, with a notable emphasis on public safety and storm watch coordination.
The American QRP Club - For builders, experimenters, ham radio operators, and low power enthusiasts.
https://amqrp.org/
The American QRP Club is a hub for ham radio builders, experimenters, and low-power enthusiasts featuring detailed equipment reviews covering transceivers and receivers from brands like Icom, Alinco, and Yaesu. The site also offers kits, project resources, and software references, making it a practical destination for anyone interested in QRP (low-power) radio operation and homebrewing.
http://sunstarfrance.com/
Olly Penrice runs this site combining a French gite rental property called Les Granges with a serious passion for astrophotography in the dark skies of Provence. Visitors can browse astro imaging galleries, explore local cycling and climbing, and even book a stay at the gite to experience the region firsthand.
http://ka7oei.blogspot.com/2026/03/modifying-mfj-5008-parabolic-ultrasonic.html
KA7OEI is Clint's technically-focused amateur radio and electronics blog, covering hands-on modifications and experiments with devices like the MFJ-5008 parabolic ultrasonic receiver. This particular post dives deep into improving the sensitivity and frequency response of the discontinued ultrasonic tool, with detailed photos, circuit analysis, and practical applications like bat detection and power line fault finding.
https://thunder.fanfreak.net/
A fanlisting dedicated to thunderstorms, inviting fans from around the world to add their name to a growing list of fellow storm enthusiasts. With 59 members and running since 2011, it is part of the TheFanlistings.org network and uses the Listing Admin Robotess Fork script.
https://roanestate.edu/pages/obs/index.htm
The Tamke-Allan Observatory at Roane State Community College in East Tennessee hosts public stargazes, telescope-making workshops, and astrophotography events for students and amateur astronomers alike. Visitors can explore images of nebulae and planets captured through the observatory's equipment, find astronomy calendars for the Knoxville area, and connect with the local ORION observing group.
http://astrometry.org/
Astrometry.org is an educational resource by Istituto Scientia dedicated to popularizing astrometry and celestial mechanics, two of astronomy's oldest classical branches. Visitors can explore topics like star positions, orbital mechanics, the SAO star catalog, and an online planetarium, with historical context tracing these sciences from ancient Greece through Galileo and Newton.
http://russsscope.net/staxtutorial.htm
A beginner-focused step-by-step tutorial for stacking and processing planetary images using the free software Registax, written by an astrophotographer who uses a Meade DSI Color camera. The guide walks through alignment, optimization, stacking, and wavelet sharpening in plain language, making it accessible to newcomers who find other tutorials too vague.
http://collembola.org/
A comprehensive scientific checklist of all Collembola (springtails) species in the world, searchable by taxon and linked to global distribution maps at family, genus, and species levels. The site also includes biology overviews, identification guides, collecting techniques, bibliographies, and images, making it an invaluable reference for entomologists and naturalists.