Science
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Random L-Systems Visualizer
Animated randomized L-system fractals drawn in real time, with sliders to reshape the growth, plus some dazzling presets…
random.earth
Browse an endless gallery of striking satellite images of Earth - rivers, deserts, farms and coastlines - with voting, f…
Raptor Resource Project
A conservation nonprofit that streams live eagle and falcon nest cameras and documents raptor restoration work across th…
Raspberry Shake
A citizen seismology network where anyone can view live seismograms from personal earthquake sensors installed around th…
Rats Play DOOM
A quirky research project that hooks up lab rats to a virtual reality rig so they can play DOOM, with hardware, software…
Ray Optics Simulation
An interactive physics simulation of light reflecting and refracting through mirrors and lenses, letting you place eleme…
Raytracing a Black Hole
Striking renders of a black hole with its accretion disk, plus an explanation of how light bends in curved spacetime and…
R-bloggers
A blog aggregator collecting news and tutorials from hundreds of R bloggers, a steady feed of data science and statistic…
RCPlanes Online
A beginner-friendly guide to the basic aerodynamics of radio-controlled planes, explaining how wings, lift, and flight b…
RD Tool
Karl Sims' reaction-diffusion playground: draw seeds and watch organic spots, stripes and coral-like textures grow in re…
Reaction-Diffusion Simulation
An interactive Gray-Scott reaction-diffusion simulation, the Turing model behind animal stripes and spots, where you add…
Reactor Atlas
An interactive world map of nuclear power plants covering every reactor since 1954, with technical sheets, 3D plant mode…
RealClimate
A commentary site where working climate scientists explain new research, rebut misinformation, and respond to developmen…
Realtime Planet Shader
A smooth interactive 3D view of Earth and other worlds rendered with procedural shaders and NASA textures, with Moon, Me…
Real-Time Wave Tracing
An interactive wave simulation that traces how waves spread and bounce in real time, a hands-on way to watch wave physic…
realtime.info
A live feed of what is happening on Earth right now: fresh iNaturalist sightings, webcams from around the world, new spa…
Rebellious Birds Make Nests out of Anti-Bird Pins
Biologists at Naturalis report magpies and crows building nests from the metal anti-nesting spikes meant to deter them,…
Recently Extinct Species
A sobering database documenting the thousands of animals, plants, fungi, and even microbes that have gone extinct in rec…
Recrystallized Rocketry
An old-school hobby site about amateur rocketry, full of homemade motor experiments, flight videos from cheap cameras an…
Red Delicious Apples Weren't Always Horrible
The story of how the Red Delicious apple went from a prized, flavorful find in an Iowa orchard to a mealy supermarket st…
Red Panda Finder
A family tree of over 1300 zoo-born red pandas with tens of thousands of hand-tagged photos, a random-panda button and p…
Reddit Interest Network
An interactive network map of Reddit where subreddits cluster by shared commenters, letting you zoom through communities…
Reef Builders
A saltwater aquarium blog founded in 2006 covering reef tanks, coral breeding, new gear, and the people shaping the hobb…
Reef Check
A global coral reef monitoring network that trains volunteer divers to survey reef health and publishes the resulting ci…
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