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://illinoiswildflowers.info/
Created by Dr. John Hilty, Illinois Wildflowers is a comprehensive botanical reference covering prairie, woodland, wetland, savanna, and weedy wildflowers native to Illinois, complete with plant-feeding and flower-visiting insect databases. The site's depth is remarkable, extending beyond flora to include vertebrate animal interactions, botanical and ecological terminology, and detailed photo documentation built over nearly two decades.
https://www.qsl.net/k9jx
The Jacksonville Amateur Radio Society (JARS) of Jacksonville, Illinois maintains this club homepage featuring repeater frequencies, officer listings, and an extensive archive of their bi-monthly newsletter 'The Bandspread' dating back to 1995. A not-for-profit FCC-regulated organization, JARS hosts monthly meetings, operates two repeaters, and provides emergency communications support for the local community.
https://ifip.com/wa8phd.htm
WA8PHD is the personal ham radio page of Terry Morris, a no-code license pioneer who shares his remarkable story of teaching Morse code to a stroke survivor with aphasia and dyslexia. The site covers a wide range of amateur radio equipment, antennas, weather information, and personal interests including photography and travel.
https://asteroid.lowell.edu/
Lowell Observatory's Asteroid Observing Tools hub provides professional-grade data mining and observation planning tools for minor planets and comets, powered by the astorbDB database. Researchers and amateur astronomers alike can query orbital parameters, generate ephemerides, identify near-Earth asteroids, and download datasets using interactive tools like AstEph, AstFinder, and QueryBuilder.
https://members.tripod.com/~Hamnut_2/index.htm
Larry Miller (KB5ITT) shares his adventures installing ham radio repeaters on mountain peaks in the San Juan Mountains of southwestern Colorado, blending technical radio work with exploration of ghost towns and scenic four-wheeling routes. The site covers two specific mountain-top repeater builds near Silverton, historical photography of old mining towns like Animas Forks, and off-road trail information for the region.
https://naqcc.info/
The North American QRP CW Club (NAQCC) is a free-to-join nonprofit organization dedicated to promoting low-power amateur radio operation using Morse Code and simple wire antennas. Members can participate in contests, sprints, challenges, and CW nets, with resources to help hams of all skill levels improve their CW speed and proficiency.
https://nautiloid.net/fossils/sites/mazon/mazon.html
A firsthand account of fossil hunting at the Mazon Creek site in Illinois, one of the world's most celebrated locations for soft-body fauna preservation found inside concretions. The author shares photos, practical tips on finding nodules, and personal observations from multiple visits to this unique strip-mine-turned-wildlife-preserve.
https://www.qsl.net/wa4fob
WA4FOB has assembled an extensive categorized directory of ham radio links covering everything from national amateur radio societies worldwide to antenna manufacturers, DXing resources, QSL card printers, and license exam prep. With nearly 500 links organized into over 20 sections, this is a thorough reference point for amateur radio operators looking to connect with clubs, contests, logging software, and equipment dealers.
https://iceinspace.com.au/
IceInSpace is the largest online amateur astronomy community in the Southern Hemisphere, serving over 20,000 registered members across Australia, New Zealand, and South America. The site features astronomy forums, equipment reviews, DIY projects, astrophotography galleries, event reports, and an astronomy glossary tailored to southern hemisphere observers.
http://swrrc.org/
The Southwest DMR Radio Club (SWRRC) appears to be an organization dedicated to DMR (Digital Mobile Radio) amateur radio communications in the southwestern region. The site serves as a hub for club members and ham radio enthusiasts interested in digital radio modes and repeater networks.