Science
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Rosalind
A platform for learning bioinformatics through problem solving, in the spirit of Project Euler, with graded puzzles on D…
Rotations and Balls in Even Dimensions
A math essay on how rotations behave in even dimensions and what that means for the balls they act on, written for reade…
Rotten Menu
A site exploring the microbiology of food fermentation, explaining how microbes turn raw ingredients into the foods and…
rovers.land
A visual journey along the path of NASA's Mars rovers that lets you follow Curiosity sol by sol through every photo it h…
Royal Air Force Museum
The online collection and history archive of the RAF Museum, covering a century of British military aviation and its air…
Royal Botanic Gardens, Kew
The website of the world-famous botanical garden shares plant science research, conservation stories, and virtual tours…
RSC Periodic Table
The Royal Society of Chemistry's interactive periodic table with podcasts, videos, history, and uses for every element,…
RSOE EDIS Event Map
A live world map from an emergency and disaster information service, plotting events such as earthquakes, floods, fires,…
RSPB
The Royal Society for the Protection of Birds shares species guides, nature reserve visitor information, and conservatio…
RTL-SDR
A blog covering software-defined radio projects, letting hobbyists use cheap USB dongles to listen in on satellites, air…
RubikSolve
A Rubik's cube solver where you enter the colors on each face and get a solution in fewer than 25 moves to unscramble yo…
Rubin Observatory First Look
The first images from the Vera C. Rubin Observatory, including sweeping views of the Virgo cluster and the Trifid and La…
Rus Khasanov
Abstract macro photography and films by Rus Khasanov, who turns soap film, oil, ink and paint into swirling planets, iri…
RussianSpaceWeb
A meticulously researched independent archive covering the history and current activities of the Soviet and Russian spac…
moultano.wordpress.com
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Ryan Moulton's Articles
A blog of playful, rigorous essays such as the hunt for dark breakfast and a fair ranking of the most brilliant birds, m…
SAFE Acoustics
A map of recording sites in Borneo's rainforest where you can pick a place and a time of day and listen to the real dawn…
Sage Ransom
A personal site with a playable optics simulation where you move lenses and light sources, plus photography, writing and…
Sailboat Physics and Design
A hobbyist's illustrated explainers on how aerofoils, sails, keels and fins generate lift and how a yacht works, from ci…
SailNavSim
A global sailing navigation simulator that uses real weather and ocean data, so you can sail a virtual boat across the w…
Saltwater Aquarium Blog
A blog of practical saltwater aquarium guides covering fish, corals, equipment, water quality, setup, and reef-tank trou…
Sam Van Aken
The portfolio of the artist who grafts single trees to bear 40 kinds of fruit, plus botanical cyanotypes, herbarium prin…
Sam's Laser FAQ
A practical guide to lasers for experimenters and hobbyists, covering safety, types, parts, drive electronics and constr…
San Francisco Trees
Self-guided walking tours of the notable trees in every San Francisco neighborhood, with photos, landmark trees, a top 1…
Sandatlas
A photographer's collection of extreme close-up images of sand grains from beaches around the world, paired with geology…
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