I watch a LOT of YouTube videos about making stuff. Mostly people in their workshops making furniture, or props, or costumes, or miniatures, or their own tools, or weird art. One of the best teachers in this maker-verse is Laura Kampf. Based in LA, she calls herself the Janitor of LA because she likes to pick up junk and turn it into useful stuff. I like her style, both her style in videos and her style of creations. She is a born teacher, and more than most makers, manages to extract teachable pithy advice from what she does. As just one example: she says the best art pieces come from pairing worn, old junky things with new glossy parts for contrast, so the artifacts are hybrids — slick new knobs on a rust box — which is true but it would have taken me a long time to notice that. — KK

If you have listened to podcasts in the past decade, or watch tutorials on YouTube, it would be hard to miss Hank Green, who is a prolific explainer. He is omnipresent in the explainosphere. I enjoy dipping into his latest YouTube solo channel, where, in his signature rapid-fire style he explains whatever interests him. His lessons are very clear, sensible, and often with a little bit of a skewed view. He’s probably one of the best explainers of complex things. — KK

Jurassic Park Computers in Excruciating Detail is pure movie-nerd joy and behind-the-scenes magic for JP fans. The author goes through every single computer in the film, and I learned that today’s equivalent of about $4,000,000 in hardware and software was loaned for the production, and that everything was functional because, even then, audiences were too sophisticated about computers to fake it. This movie came out when I was 10 years old. I played the video game, I watched the movies on loop, and at one point I even had a Jurassic Park–themed birthday party (at age 27), so this kind of obsessive breakdown literally induces glee. R.I.P. Sam Neill. — CD

Imagine having access to all the ancient maps of the world, and being able to explore them with AI, including searching on the words etched in the maps, or concepts about the maps – for instance “give me all the maps showing the routes of Roman aqueducts.” All this and more are available online for free, at the David Rumsey Map Collection. For 25 years Rumsey has been scanning over 140,000 maps of all kinds from his insane collection from around the world. He then innovates ways to share them. When you find a map you particularly like, you can tap a button and have it printed out on a large scale and mailed to you for a reasonable fee. This is an international treasure. — KK

Storied Colors is nerdy and delightful. More than 250 colors are indexed and searchable so you can read the stories behind their origin, chemistry and use. This is especially meaningful to me because not only do I pride myself on knowing the various names for different shades of color, but when I was a young weird kid, instead of playing with dolls, I would play with my box of crayons as characters, assigning personalities based on their color. Color has always been a portal to the imaginal for me, rather than just a simple tint. There’s a mention on their website of an upcoming newsletter version that you can sign up for. — CD

Mechanical-pencil.com reminds me of the Way Things Work book I loved as a kid, but with 3D animations that make it even more illuminating. Mechanical engineer and artist Bryan Macomber tears down familiar objects — a Pilot G2 retractable pen, a Zippo lighter, a Pez dispenser, a BIC mechanical pencil — and walks you through how each one works, part by part. Watching the push-push mechanism inside a clicky pen click into place is genuinely satisfying. I hope Bryan keeps adding to this series. — MF

This Reddit thread asks what a person can learn in 10 minutes that will be useful for life, and the top-voted answer is using your hand span, thumb to pinky, as a built-in measuring tool. Mine is 7 inches, which I will now never forget. The other favorites in the thread are worth sharing for your relationships and your nervous system: "Never explain yourself to people committed to misunderstanding you." Before responding in an argument, scan your body and take a slow nasal breath to notice fight or flight before you speak. Then speak calmly. "'No, I can't' is a full sentence. You don't owe anyone a 10-minute TED Talk about why." — CD

Recently when I was in Amsterdam, I went on a private rare book tour at the Embassy of the Free Mind. The embassy houses one of the world’s largest collections of Hermetic and occult books, and they’ve digitized thousands of manuscripts that you can read online for free. But if you’re in Amsterdam, I definitely recommend booking a guided tour. I chose the tour that focuses on alchemical texts, but they have others on magic, witchcraft, and Rosicrucianism. I didn’t get to touch any of the books, which is understandable, but I did get to smell one that was hundreds of years old and it was glorious. — CD

The Wikipedia app (free, iOS/Android) has a locations feature that shows Wikipedia articles on a map. It’s a fun way to discover interesting spots when you travel. I've been using it around Los Angeles and have found things I never knew existed. My favorite find so far: the Hollywood Freeway chickens, a colony of feral chickens that have lived under the Vineland Avenue off-ramp of the 101 since around 1970, possibly descended from a truckload of poultry that overturned. — MF

Recent research shows that trees are like animals that can collaborate with each other, exhibit individual behavior, communicate with each other over large distances, and regulate the environment to a remarkable degree. All these marvelous abilities are revealed in the graphic novel version of the best-selling book The Hidden Life of Trees. The graphic novel is an easy pictorial read, with sketches and color drawings illuminating both the new ideas and the persistent beauty of our wooden allies. This book will give your brain the reasons why your soul finds trees so good. — KK

Freak Pages is a directory for the weirdest Wikipedia entries, community‑curated to help you discover strange topics you’ve probably never heard of. Lots of rabbit holes to dive into. — CD

Every December, writer Tom Whitwell publishes an eclectic list of 52 surprising things Whitwell learned over the year. It’s one of my favorite year-end reads. A few samples:

• Marchetti’s Constant is the idea that throughout human history, from cave dwellers to ancient Greeks to 21st century Londoners, people tend to commute for about an hour a day — 30 minutes out, 30 minutes home. So faster travel leads to longer distances, not less time. [Cesare Marchetti, plus a 2025 update]

• The Casio F91W — the ubiquitous digital watch, worn by Osama Bin Laden, costing just £12 — has been faked for years, and the fakes are getting better and better. [Andy C]

• Childhood peanut allergies are falling dramatically, perhaps because advice to avoid peanuts was reversed. [Simar Bajaj]

Browse his previous lists here. — MF

Here’s a person-made map listing the birthplaces of influential ideas that shaped civilization. More than 250 of the world’s greatest ideas and inventions, color-coded by fields of knowledge. It’s fun to explore and learn something new. — CD

I love when others synthesize what they’ve learned and share lists like these—102 Lessons from 102 Books, organized by theme. Here are a few of the insights:

• On Focus: Even having a phone nearby reduces our mental bandwidth and makes us seem less attentive in conversations.

• On Reflection: Asking yourself “what went well?” at the end of the day can give you a big boost to your happiness.

• On Outreach: Friendliness is irrationally undersupplied. In one study, subjects were asked to either stay quiet or talk to a stranger during their commute. People predicted they’d prefer solitude, but they enjoyed the conversation more.

Discovered through Johnny Webber’s blog. — CD

A sensible little book is The Great Mental Models (Vol.1) by Shane Parrish. It presents nine different “General Thinking Concepts,” or what I might call, best practices for critical thinking. You may already use some of these when approaching unknowns, but others may be unfamiliar. The tone and strength of this book are ideal for young people and students, starting out on their journey of lifelong learning. It is a great little chest of handy tools for grappling with complexity. These are all post-AI skills. — KK

The Scale of Life is a website that visualizes worldwide statistics in real time, displaying a live count of everyday events, things made, and natural phenomena the moment you open the page. It’s fascinating to watch the spectrum of activity—from packages delivered and lightning strikes to new trees sprouting. It’s not 100% accurate, but if you are curious can click on counters views sources and explore deeper. — CD

I'm not here to shame anyone for scrolling through TikTok. I suggest you give WikiTok a try one night instead. It presents random Wikipedia articles in that familiar endless-scroll format we're addicted to, but replaces dance trends with images of extinct megafauna, weird inventions, and artists I’d never heard of. A recent favorite: Indonesia once issued a postage stamp featuring a fragment of a fossilized Homo erectus skull — the kind of random delight that makes this site worth visiting. — MF

The Big Book of Secret Hiding Places, published in 1987, is an illustrated guide to concealing things in clever hiding places. It covers methods for concealing items in buildings, vehicles, and on the body. Even if you don’t need to hide anything (or smuggle it across a border), it makes for fascinating reading. — MF

My mental image of country sizes has been wrong. The True Size Of... is an interactive website that lets you drag countries around a world map to compare their actual sizes without the distortion caused by standard map projections. It's shocking to see how countries change shape as you move them — drag Greenland into Africa and watch it shrink to a small fraction of its map projection! — MF

Many people are having trouble wrapping their heads around the fact that global depopulation and not overpopulation is our challenge. The childless trend has been underway for 50 years but has accelerated dramatically recently. We are at the cusp of deaths outnumbering births on the planet, with no change in sight. I recommend this very, very long New Yorker article – “The End of Children” – as the very best introduction and explainer. It focuses on particular programs, people, and events in South Korea, which is leading the world in depopulation, much faster than the Japanese. The piece is beautifully written, expertly reported, and informed. I think everyone should read it; paste the article url link into 12FT to read it in full. — KK