Primitive Technology shows us how to make a very simple blower that can easily keep a small furnace going. The blower is made of a stick, a rectangular piece of bark that acts as a rotor, and a length of twine that can be pulled to spin its blade.

Kurzgesagt simplifies two thought experiments stemming from black holes. The universe being a “hologram” is too literal though. Saying that you can describe a cube by drawing a cube is not the same as saying that a cube is indistinguishable from a drawing of a cube.

Klipsch wishes Capitol Records a happy 75th birthday by releasing special editions of The One Bluetooth speaker, The Three desktop speaker, and the Heresy III loudspeakers. They have real wood veneer cases, spun copper switches and knobs and a unique insignia.

Kurzgesagt kicks off a multi-part lesson that explains how an organism’s size drastically affects its evolution. For instance, droplets of water could be lethal to insects. So some of them evolved to repel even tiny particles of water.

While we’re out here waiting for Flyknits and Primeknits, Primitive Technology took matters into his own hands and came up with the Protoweave. He made a pair of simple sandals out of loya cane so he can stunt in the jungle. And also protect his wrecked feet.

Kurzgesagt turns self-referential in its latest clip, exploring their own tendency to create videos about bad things that may someday befall our universe, but still managing to have a positive outlook on humanity.

Our first good look at Netflix’s adaptation of Death Note reveals that it’s very different from its source material. We can see why fans of the manga are irked, but we’re willing to give this a shot. Besides, there’s already a faithful live-action adaptation.

Primitive Technology made a reusable facility for producing charcoal. He builta conical wood frame, walled with mud, then burned the wood to harden the mud and make his first batch of charcoal. If only he had someone with whom to trade the charcoal. For like three sheep.

This new bonus track from our favorite, ever-mutating cartoon band starts out slow and subdued, then kicks into high gear, as 2-D draws us in with his tale of drug addiction, and won’t let go. We’re only bummed that this track didn’t make it onto Humanz.

Automation has been around for centuries, but the rise of machine learning has led to new industries that need relatively few people to operate. As Kurzgesagt and many others have pointed out, this is an unsustainable trend that needs to be answered swiftly.

Adam, Will and Norm got their hands on the awesome LEGO Ideas NASA Apollo Saturn V scale model rocket a bit earlier than us mere mortals. Watch them unbox, methodically knoll parts, and build the set. Assembly and story time start at 2:25.

Techmoan digs up all kinds of strange and wonderful “high-tech” stuff from the past. One of the crazier items has to be this cassette tape which defeated the entire purpose of a cassette, making you load in tiny reels of tape. Perhaps this was the precursor to the fidget spinner.

They sound cute and cuddly, but the white dwarfs that Kurzgesagt is talking about here will be the last bastions of light and energy in the universe as our universe eventually expires. These highly dense objects are basically the remnants of stars after they burn out.

Primitive Technology made a proto-robot arm. The monjolo is a hydraulically-powered hammer that’s often used to grind beans or grain. When water fills the trough, it lifts the hammer’s head. The empty trough then rises, and the head falls down.

Techmoan looks back at one of the odder bits of tech that video game maker Atari created. The Atari Video Music was an analog device that could produce a lightshow on your TV using your stereo system as its input. While it wasn’t a hit, the Atari 2600 was their next release.

Techmoan checks out an awesomely complex bit of 1970s tech. The Panasonic RS-296US used a mechanical carousel filled with 20 extra-long cassette tapes to allow for up to 2.5 days of continuous music. There was no way to select individual tracks, but you could choose tapes.

Puddles Pity Party managed to mash up two unlikely tunes into one, combining the Johnny Cash classic Folsom Prison Blues with The Who’s Pinball Wizard. We’re not sure why it works, but Puddles always does a good job hypnotizing us with his voice.

Kurzgesagt sums up the basics of genetically modified organisms or GMOs. Technically, we’ve been modifying the genes of plants and animals for thousands of years, from corn to dogs. GMOs are powerful tools – it’s how and why we wield them that matters.

Primitive Technology has almost exhausted his supply of clay from the nearby creek, so he tried using the clay from termite mounds to make pottery. He found out that the termite clay is too smooth and plastic, but is good enough for simple pottery.

“Go ahead and buy sweet and succulent tree fetuses. They’re just gonna rot on your counter anyway.” Cracked and Roger the educational Satan are back to explain how groceries use psychology and statistics to make us spend and eat more.

“Well, I wouldn’t say it’s good, but I would say it’s effective.” Cracked and Roger are back to ruin yet another thing that makes us happy. Breakfast cereals are addicting carb flakes made from American tradition, sugar and market research.

Primitive Technology set up a new garden to plant sweet cassava and yams – two crops that are relatively easy to maintain and produce lots of food. He also shows us the old stone hut that he built 10 years ago, and his pet mammoth turkey.

Cracked points out why the live action Batman TV series and films look the way they do and are so distinct. They are products of their times, a reflection of America’s past three decades. Though we refuse to believe that Joel Schumacher’s 2-film run was the ’90s fault.