Science
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Kiva Ford
Scientific glassblower Kiva Ford makes astonishing miniature glass sculptures: ships in bottles, tiny animals, vials and…
Knife Steel Nerds
Articles and original research on steel metallurgy, heat treatment, and knife design for makers and enthusiasts, with pl…
Knot Theory
Andrew Ranicki's online archive of knot theory source material, with biographies of early knot theorists, P.G. Tait's pa…
Knotilus
A daily number puzzle inspired by Fibonacci-like sequences: use logic and simple addition to work out which sequence fit…
Knottingham
A browser tool for drawing and manipulating mathematical knots, refined through peer review and user suggestions, for ex…
Knowable Magazine
A nonprofit digital magazine from Annual Reviews turning authoritative scientific review articles into engaging journali…
Knowing Neurons
An award-winning site by young neuroscientists that explains the brain and mind through articles, illustrations, and cre…
Korea TSPs
Waterloo's record-setting traveling salesman tour that visits 81,998 bars in South Korea, with maps, data and explanatio…
KoreAves
An interactive explorer of South Korean bird evidence, letting you compare regions and trace the source behind each reco…
kottke.org - home of fine hypertext products
Jason Kottke's long-running curated blog highlighting interesting finds across art, science, technology, and culture sin…
krazerlasers.com
An old-school hobbyist site packed with homemade lasers, roaring Tesla coils, high-power rockets and GPS trackers, each…
KSP Visual Calculator
Interactive calculators for Kerbal Space Program that plan delta-v budgets, comm-net links and ISRU, drawn visually so y…
Kunstformen der Natur
Ernst Haeckel's famous Art Forms in Nature plates presented as zoomable high-resolution images, letting you dive into ev…
Kyoto Penguins Relationship Chart 2026
Kyoto Aquarium's annual relationship chart of its penguins, mapping who is in love, who is feuding, who was dumped and w…
L Systems
An in-browser L-system playground with presets and editable production rules that grow fractal plants and patterns from…
LaboratoryInfo
A study resource on medical laboratory science, with guides and notes on microbiology, biochemistry, hematology, histopa…
Lachlan Turczan
Artist Lachlan Turczan creates immersive installations of rippling water, vibration and light, where sound waves sculpt…
Lady Bird Johnson Wildflower Center
A native plant database from the University of Texas covering thousands of North American wildflowers with photos and ha…
L'Affaire Siloxane
The strange true story of how antiperspirant fumes nearly led NASA to evacuate the International Space Station, told wit…
Lake Nyos, Menchum
The Cameroon crater lake that released a cloud of carbon dioxide in 1986 and suffocated over 1,700 people in one night,…
Lake Superior Guide
An archival internet guide to the greatest lake, with images, essays, climate information, history, lake facts and links…
Lambda Calculus
An illustrated explanation of lambda calculus, Alonzo Church's 1936 model of computation, showing how functions and vari…
Landed!
A lunar lander game: touch down on the pad as softly and as centered as you can for a higher score, with easy, normal an…
Lander
A lunar lander style web game where you pilot a small craft down to the surface, playable instantly on a phone or a comp…
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