OneZoom is an interactive tree of life that allows you to zoom in and out and explore the connections between 2.2 million living species. It’s a lot to visualize and process, but fun to explore. I felt really small and grateful realizing what a tiny little branch of life we are as humans. — CD

I became fascinated with the history of food after experiencing the Last Supper in Pompeii exhibit and seeing up close their cookware and wine vessels and foods. This food timeline is equally fascinating. A Food History Librarian has outlined the beginning of food, beginning with water & ice, and has transcribed ancient recipes found in her research. She started her project in 1999 and continues to update it. — CD

Adam Savage, of Mythbuster fame, is the consummate maker. I carefully follow his youtube channel, Adam Savage’s Tested, as he and his team make complicated props and unexpected odd projects. Every couple of days he will post a maker video of some sort. Adam is extraordinary in his world-class, wide-ranging craftsmanship (sewing, welding, painting, machining, woodwork, etc.) and his enthusiasm and ability to teach is stellar. I always learn something. It’s the first thing I watch at the end of the day. — KK

We often recommend lists of things, but this is the first time we are recommending Wikipedia’s list of lists of lists. For example, one of the list items is a list of list of nicknames. And one of the list of nicknames is list of city nicknames in the United States, which has sublists categorized by state. My hometown of Boulder, Colorado has the nickname “The People’s Republic of Boulder.” What’s the nickname of your hometown? — MF

LingYourLanguage is a game of guessing the correct language after listening to a short audio clip. If you really want to challenge yourself, listen with your eyes closed before reading the multiple choice options. The audio clips are compiled by volunteers in an effort to share the world’s languages with a wider audience — read more about the project here. Listening to the world’s languages has a meditative quality to it and makes me feel more connected to the world itself. — CD

This is so cool. River Runner is a virtual tour of the US that follows watersheds. On the website, pick a place in the contiguous US and then it will carry you along the creeks and rivers that flow from that place until you reach the ocean. You get a photo-realistic ariel view as if you were in a drone following the rivers and passing through towns and farms. For a fantastic and fantastically long (5,000 km) tour, start almost anywhere in Wyoming. These aren’t really a tour of rivers as much as a way to tour the greater landscape of a continent. — KK

The Curious Reader has a great outline of the 4 different reading levels and sub-types pulled from “How to Read a Book.” The first level being Elementary Reading — where the main question of reading is “What does the sentence say?” Level two is Inspectional — where you ask, “What is the book/article about?” This is how I read most news articles and blog posts. Level three is Analytical — when you want to really understand the topic by asking questions and chewing and digesting it. The fourth level of reading is my favorite: Syntopic Reading. This is where you read multiple books on the same subject and compare and contrast the ideas. Each reading level serves a different purpose, so it’s helpful to ask yourself before reading, “What do I want out of this book or article?” — CD

Native Lands is an interactive web map that shows the location of all the indigenous peoples of the world — primarily in North and South America — before they were displaced or eliminated. What is unusual with Native Lands is the high resolution, mapping the resident locations almost to the current county level. You can click on the specific tribe and get links to further information, often from the tribe itself. I was shamefully not aware of the local tribe in our neighborhood before this. — KK

Mindat.org is a great website to lose time if you’re an amateur rockhound. It is a nonprofit project by The Hudson Institute of Mineralogy, and the “leading authority on minerals and their localities, deposits, and mines worldwide.” There’s a lot of ways to search for and discover new rocks, including a cool color search. If you’re more of a “pro” than an amateur you can contribute your own photos and data. My husband likes to bring home rocks from river beds and hikes and I gravitate more toward crystals, but it’s one thing to admire the natural beauty and wonder of our earth’s materials and another to learn about it’s importance and use in our world. — CD

For 50 years this chart has been hanging on my wall. The Histomap of History is a 5-foot long diagram that visually displays the relative power of ancient nations over the last 4,000 years in 50-year increments. At one glance, this colorful chart gives you the gist of world history. Since it was made in 1950, some of the historical details may be considered old-fashioned now, but this is the chart I use to get a rough idea of our past. Visitors to my studio will usually remark on its ingenious design. Long out of print, you can get a reproduction of a vintage copy for $48. — KK

I love this fantastic phone app that identifies bird songs. Merlin does a remarkably great job identifying birds from their sounds, even when they are far away, and even when more than one bird is singing. It works all over the world but you need to load in the library for your geographical area. It’s the Shazam for birds. And it’s free for Android or iOS. — KK

Tvtropes.org is a repository of all the tropes you find in advertising, film, print, music, art, etc., along with examples. Tropes are not cliches — they are storytelling devices and shortcuts for evoking emotion and getting you “up to speed.” It’s hard to avoid tropes altogether, so it’s better to get to know them. This is a growing wiki that you can add to and easily get lost in. Here is a list of Forgotten Tropes that have dropped off from mainstream media. — CD

My daughter introduced me to this terrific YouTube channel that presents the history of life on Earth as if it were a giant multiplayer video game. The creator presents real facts about plants and animals, but calls them “builds” and “upgrades.” Start by watching this video on the Cambrian Explosion, called “When Earth Was in Beta.” — MF

The single unequivocal benefit that civilization, science, and modern life has given us is: longer lives, on average. Extra Life, a new book by Steven Johnson, investigates the origin of this gift. Johnson tells the story of our longer lives quickly, easily, with tons of news. Longevity is an enabling invention that has opened up many other benefits, and its story is important because this miracle has many parents and most of them were institutions. To further the extra 20,000 days we been granted, or to birth other meaningful inventions in the future, we need to continue to improve our institutions. Extra Life: A Short History of Living Longer is a great, fast, important read. The book has a good companion 4-part PBS miniseries (streamable) that summaries the story in the context of Covid-19 vaccines and current events. — KK

I’m fascinated by Aesthetics and the people who submerge themselves in these visually-appealing worlds like cottagecore, which is a romanticized interpretation of western agricultural life (Jonna Jinton has mastered this). This Aesthetics Wiki has all the links to everything you would ever need to know about aesthetics, including how to create your own beginning with a wardrobe, or how to go about blending aesthetics to create something new (I’m leaning towards vintage parisian plus surrealism). It is a fantastic rabbit hole. — CD

I’m still bingeing on The Great Courses videos. These are the best university courses, without university tuitions. Even better, if you have a public library card in the US, you can get free access to The Great Courses through the Kanopy streaming service. I stream the Great Courses, via Kanopy, on my Roku smart tv. In addition to most of the catalog of Great Courses, Kanopy is a real treasure that also offers a very long tail of documentaries, old movies, and tutorials that are too niche even for Netflix. It’s like a public library of video. You are limited to 10 “plays” per month, except unlimited Great Courses. And it’s all free if you have a library card. — KK

I am getting a kick out of Unsuck-it.com where you can find “unsucked” definitions for corporate speak, or as its called on the website “douchey jargon.” What a great explanation of brain dump: Everything an individual knows about a topic, shared via cerebral defecation. — CD

I like to responsibly forage for wild mushrooms. I do that by cautiously collecting only a handful of mushroom varieties that are 1) easy to identify, 2) not easily confused with similar harmful ones, 3) really delicious. If you are able to learn the difference between a head of cabbage and head of lettuce you can learn 10 basic wild mushrooms. A good place to start is this book for mushrooms in North America: Mushrooming without Fear: The Beginner’s Guide to Collecting Safe and Delicious Mushrooms. A second trick is to visit a decent mushroom stall at a farmers’ market and repeatedly buy wild mushrooms to cook. Working with them will give you a good “search image” when you are hunting for them. — KK

Tutorials on YouTube are near infinite in their variety — and quality. I’ve long paid for a subscription to Lynda.com which provides consistently very high quality tutorials for learning to use design and media software, and for learning how to program and code. The courses are methodical and reliable. I can get up to speed or earn advanced skills pretty quickly. I’ve been using them for learning video editing. Recently Lynda was bought by LinkedIn, and renamed LinkedIn Learning. Their complete catalog of 15,000 courses are made available for free via public libraries in the US. Generally all you need is a library card account to gain access through your local library system. BTW, tons of Recomendo readers reminded me that many of the Great Courses (mentioned previously) are also available online for free via your local library. — KK

A fantastic history teaching tool is to give each student a 2,000-year old Roman or Greek coin to clean, study, and keep. Recovered old coins are abundant enough that a bag of uncleaned (and unidentified) ancient coins can be purchased for a few dollars per coin. Of course these coins won’t be high quality; they may be corroded or poorly crafted or well-worn down and indistinct, but they will be authentically old, and actually used as money. That is part of the lesson. Small lots of genuine ancient coins can be bought from reputable sources like Vcoin, where a lot of 20 diverse coins can be $45 (or bit more than $2 per coin). Cleaning them up and trying to identify them gets into their story. Ancient Coins for Education is a resource for educators using old coins, and Kevin’sCoins has tips for cleaning them. — KK