Education

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putanumonit.com Article

100 Ways To Live Better

A hundred bite-sized pieces of life advice crowdsourced and sharpened from a viral thread, covering habits, money, relat…

liorsinai.github.io Article

100 Years to Solve an Integral

The surprising history of the Mercator map and the integral of sec(x), a calculus staple that stumped mathematicians for…

stars.chromeexperiments.com Interactive

100,000 Stars

An interactive 3D map of the stellar neighborhood showing over 100,000 nearby stars colored by temperature, which you ca…

tripgeo.com Game

1000 Years

An interactive map quiz where you travel through history by guessing the year of key events, people and places for each…

1000wordphilosophy.com Website

1000-Word Philosophy

An anthology of introductory philosophy essays, each explaining one big question such as free will or justice in a thous…

10fastfingers.com Interactive

10FastFingers

A typing speed test that measures words per minute against a language-specific word list, with competitive leaderboards…

11v11.com Website

11v11

A football statistics archive with head-to-head records, historical line-ups, and results covering more than a century o…

classicalwisdom.substack.com Article

12 Ancient Greek Terms that Should Totally Make a Comeback

A tour of twelve ancient Greek words like eudaimonia and arete, explaining what each meant and why modern life could use…

isaak.net Article

12 Months of Mandarin

A learner documents twelve months of studying Mandarin Chinese, with hours logged, methods tried and an honest look at w…

120years.net Website

120 Years of Electronic Music

A chronological archive exploring the instruments that shaped electronic music, from the 1876 Musical Telegraph to moder…

visitgreenland.com Article

13 Ghost Towns in Greenland

A tour of 13 abandoned settlements in Greenland, from mining towns to old trading posts, explaining why each was left be…

renlyon.org Interactive

1504 Da Vinci Globe

A zoomable flat projection of the 1504 ostrich egg globe linked to Leonardo da Vinci, one of the oldest globes showing t…

1600.lol Website

1600.lol

A free SAT prep site with targeted question practice, timed practice-test modes, score-planning tools and reviewed study…

16personalities.com Interactive

16Personalities

A free, detailed Myers-Briggs-style personality test that produces an in-depth report on your strengths, relationships,…

mikecanex.wordpress.com Article

1922: Why I Quit Being So Accommodating

A complete transcription of an oddly modern 1922 American Magazine essay in which an anonymous writer explains why he st…

1940s.nyc Interactive

1940s NYC

An interactive map with street photos of nearly every building in New York City from 1939 and 1940, so you can walk any…

1950census.archives.gov Website

1950 Census

The National Archives site for the 1950 US census, where you can search names and browse the original handwritten popula…

allthatsinteresting.com Image

20 Chemical Reaction GIFs

A gallery of 20 animated GIFs showing strange and mesmerizing chemical reactions, from simple elements behaving in surpr…

supermemo.guru Article

20 Rules of Knowledge Formulation

Dr Piotr Wozniak's widely cited guide on how to write effective flashcards, covering simplicity, context and redundancy…

2012books.lardbucket.org Website

2012 Book Archive

An archive of openly licensed college textbooks from 2012 spanning business, science, and the humanities, free to read o…

20ly.kierankelly.net Interactive

20LY

A browser-based 3D star atlas of our local stellar neighborhood that lets you fly between nearby stars, filter by spectr…

21hrs.space Interactive

21 Hours on the Moon

Relive the 21 hours Armstrong and Aldrin spent on the lunar surface during Apollo 11 through panoramas, photo galleries,…

227ahb.org Website

227th Assault Helicopter Battalion

A veteran-built history site for the 227th Assault Helicopter Battalion, 1st Cavalry Division (Airmobile), with company…

wikipedia25.org Website

25 Years of Wikipedia

A celebration of Wikipedia's 25th anniversary, collecting milestones, stories and reflections on how a volunteer-written…

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