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://www-k12.atmos.washington.edu/k12/grayskies
Hosted by the University of Washington's Atmospheric Sciences department, GRAYSKIES is an educational resource focused on Earth's atmosphere, offering climate data, rooftop weather observations, and curated links to Pacific Northwest weather and climate tools. Visitors can explore 30-year climate averages, satellite imagery, and data plotting tools alongside a broad collection of regional and national weather resources.
http://bratsatv.org/
The Baltimore Radio Amateur Television Society (BRATS) is a non-profit amateur radio club based in Baltimore, Maryland, focused on ATV (amateur television) repeaters, emergency communications, and public service. The site features club news, meeting announcements, technical writeups on their ATV repeater revival project, and information on joining the organization.
http://uvaa.org/
The Utah Valley Astronomy Association (UVAA) is an informal stargazing club based in Utah Valley, founded in the early 1990s by Rich Tenney and maintained online by Paul Witte, offering a community for observational astronomy enthusiasts with no dues or obligations. The site preserves the club's history and hosts a notable Binocular Astronomy Resource Page, along with links to star parties, a member gallery, and connections to other Utah astronomy societies.
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://qsl.net/we1fly
The Aeronautical Mobile Operators Club, callsign WE1FLY, is dedicated to ham radio operators who take their hobby airborne, earning the nickname 'Flyin' Hams.' The site provides resources on operating amateur radio in aircraft, including links to FAA regulations, QRZ.com profile info, and eQSL lookup for members.
https://www.qsl.net/harc-az
The Hassayampa Amateur Radio Club (HARC) of Arizona maintains this QSL.net-hosted hub for local ham radio operators in the region. Visitors can find club information, meeting details, and resources connecting amateur radio enthusiasts in the Arizona area.
http://txvhffm.org/
The Texas VHF-FM Society is a non-profit organization dedicated to frequency coordination and establishing standards for amateur radio repeaters across the state of Texas. Visitors can search repeater listings, renew coordinations, access technical articles, and find information about general meetings and board elections.
https://skywatch.brainiac.com/astroland
Uncle Rod Mollise's Astro Land is a long-running amateur astronomy hub hosted at 'Chaos Manor South,' packed with telescope guides, equipment reviews, CCD and webcam imaging tips, and resources for Schmidt-Cassegrain telescope users. Rod also runs the Mobile Astronomical Society and offers a free Used CAT Buyer's Guide, making this a genuinely useful stop for backyard astronomers of all levels.
http://vdazone.org/hamlinks.html
Compiled by the Northern Berkshire Amateur Radio Club (NoBARC), this extensive link directory covers virtually every corner of amateur radio, from ARRL resources and antenna plans to ATV, SSTV, antique radios, and weather satellite imagery. With over 1,300 curated links organized into dozens of categories, it serves as a comprehensive jumping-off point for ham radio operators of all interests.
https://qsl.net/kc0dbu/post30.htm
Explorer Post 30 is a youth scouting group based in Springfield, Missouri with a focus on amateur radio and related activities. The site links to ARRL and QSL.net resources, features post event photos, and connects members with local and area clubs.