Education
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Prehistoric Wildlife
A hobbyist-built encyclopedia profiling thousands of prehistoric animals beyond dinosaurs, with illustrations, size comp…
Prepform
A practice site that turns thousands of high school exit exam questions, normally locked inside PDFs, into an interactiv…
Preposterous Universe
Caltech physicist Sean Carroll's blog on physics, cosmology, philosophy and the nature of reality, alongside links to hi…
PressThink
Media critic Jay Rosen's long-running blog from NYU's journalism institute, with essays on the press, political coverage…
Pricing Money
The full text of J. D. A. Wiseman's beginner's guide to money, bonds, futures and swaps, laid out online with a friendly…
Pride Flag Identification Guide
A searchable database of pride flags you can filter by colours, stripe count and shapes to identify an unfamiliar flag a…
Prime Grid
A prime number grid visualizer that lays integers out in a grid so the patterns of primes and composites show up at a gl…
primitivetechnology.wordpress.com
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Primitive Technology
The blog behind the Primitive Technology videos, where a man in the Australian bush builds huts, kilns, tools and even s…
Primitive Ways
An archive of illustrated how-to articles on primitive survival skills, from flintknapping and fire-by-friction to corda…
Princeton & Slavery
A research project exploring Princeton University's entanglement with slavery through narrative stories, digitised prima…
Principia Cybernetica Web
A vintage hypertext encyclopedia tackling big philosophical questions with cybernetics, systems theory and evolution, wi…
Principles of Distributed Computing
ETH Zurich's Principles of Distributed Computing course page, collecting lecture material on the theory behind how distr…
Printable Grid Paper
A tiny tool by Dave Rupert that generates clean, crisp printable graph paper in the size and spacing you want, instead o…
Printable Paper
A library of free printable paper templates in PDF, including graph, lined, financial, and music paper, ready to print f…
Printing Films
An archive of vintage films about printing and type, from Monotype matrix manufacturing to type design, preserving the v…
Prior Probability
A witty, opinionated blog by F. E. Guerra-Pujol on economics, law, philosophy and pop culture, with recurring features s…
Prison Map
An interactive map project by Josh Begley asking what the geography of incarceration looks like across the United States…
PrivacyTools
A long-running guide to private alternatives for the apps you use every day, with recommendations for browsers, messenge…
Probable Futures
Interactive maps showing how heat, drought and precipitation could change around the world at 1.5, 2 and 3 degrees of wa…
Producer Library
A free compendium of music production tutorials gathered on a single page, aiming for in-depth, practical guides with as…
Professor Messer
Free CompTIA A+, Network+ and Security+ training videos, study notes and study group replays for anyone preparing for IT…
Programming and Programming Languages
A free online textbook from Brown University that teaches programming language concepts through a custom language called…
Programming Books
An ordered, curated reading list of programming and software craftsmanship books, arranged to help developers keep growi…
Programming Design Systems
A free digital book that teaches the new foundations of graphic design through code, covering shape, color, typography,…
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