Science
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Million Whys
A daily science quiz of ten-second questions on animals, astronomy, physics and chemistry, inspired by the classic 100,0…
Million Whys Daily Science Quiz
A daily science quiz inspired by the classic 100,000 Whys books, with questions about animals, astronomy, physics and th…
Milner's Descriptive Atlas, 1850
Full scans of every plate from Thomas Milner's 1850 Descriptive Atlas, from moon maps and star charts to rivers, mountai…
Mind Hacks
A long-running blog by neuroscientists and psychologists covering peer-reviewed research on the brain and behavior in ac…
Mind Your Decisions
Presh Talwalkar's blog of math puzzles, game theory, and short video explanations, with brain teasers that reward a seco…
Mindat
The world's largest open database of minerals, rocks, and localities, with photographs and data maintained by a communit…
Minerals.net
A comprehensive online mineral and gemstone encyclopedia with photographs, chemical properties, and identification guide…
Mines.fyi
A free search and map of more than 91,000 US mines from the MSHA open dataset, filterable by state, commodity, mine type…
Minesweeper Thermodynamics
A mathematician's playful blog post that treats Minesweeper boards like physical systems and uses ideas from thermodynam…
Miniature Engineering Craftsmanship Museum
An online museum of tiny working engines, scientific instruments and machinist-built models, with profiles of the artisa…
Minimal Maps
Michael Pecirno's series of minimalist maps that each show only one thing across the United States, like forests, grassl…
Mission Juno
The public site for NASA's Juno mission to Jupiter, featuring citizen-processed JunoCam images of swirling Jovian cloud…
Missouri Botanical Garden Plant Finder
A searchable database of thousands of garden plants with detailed care requirements, native ranges, and problem-solving…
Missouri Flora
Photographs and descriptions of the vascular plants of Missouri, browsable by flower color, leaf arrangement or scientif…
MIT Mathlets
MIT's collection of free interactive applets for exploring differential equations, Fourier series, linear algebra and mo…
MIT Senseable City Lab
The project showcase of MIT's Senseable City Lab, with dozens of experimental visualizations of how cities move, from tr…
Mitch Dobrowner
Black-and-white photographs of colossal supercell storms, tornadoes and lightning over the American plains, alongside la…
Mixbox
A demo of natural pigment-based color mixing for digital painting, where blue and yellow actually make green, with a liv…
MLB Hall of Fame Voting Trajectories
An interactive chart of every player's Baseball Hall of Fame vote share year by year, with filters by position, stats an…
MLU-Explain
Visual, interactive essays from Amazon's Machine Learning University explaining core concepts like decision trees, regre…
Modal Logic Playground
An interactive playground for modal logic where you build Kripke models and test formulas against them to see which worl…
Model Rocket Telemetry With a Raspberry Pi Zero
A hands-on write-up of capturing flight telemetry from a model rocket with a Raspberry Pi Zero, covering the sensors, th…
model.energy
An interactive tool for designing a zero-emission electricity system: pick a location, fetch wind and solar data, choose…
Modernist Cuisine
The site of the Modernist Cuisine team, sharing food science research, photography, and techniques from their encycloped…
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