See-Through Model Rocket Engine Burning [4K Slow Motion]

From Warped Perception: We made a see-through Model Rocket Engine to film the inner workings in 4k Slow Motion and Ultra Slow Motion. These are standard estes model rocket engines found everywhere on the planet and I always wanted to see how they burn, I figured I would cut one in half, rig it, and […]

Top 10 Lost Technologies

2000-year-old computers, swords that can slice through steel, death rays, and rain-makers – we may think that we’re at the peak of technological progress, but our ancestors were engineering things that we can’t even begin to understand. Alltime 10s pays homage to these amazing obsolete inventions, in the top 10 Lost Technologies. [AllTime10s]

How Big do Tsunamis Get? [Video]

In this video, Youtuber RealLifeLore takes a look at how big tsunamis can get, citing a few exemple from recent history in the process. [RealLifeLore]

3 Diseases That Make You Stink

Body odor is usually normal, but when it’s extreme it can be a sign of something gone wrong. [SciShow]

Why Does Skipping Coffee Give Me Headaches?

If you are a heavy coffee drinker and one day decide to cut back and stop drinking coffee entirely, chances are you’ll experience some pretty bad headaches. In this video, the folks from SciShow tell you exactly why this is happening. [SciShow]

Dogs and Humans: A 30,000-Year Friendship

An interesting “tail” about how dogs evolved from wolves to become man’s best friends! Of all the species that humans have domesticated, dogs are our oldest animal friends. But how did a group of wolves become the furry pup at the end of the bed? New research is finally unlocking the paw-in-hand evolution of dogs […]

Researchers Deal With Knotty Issue: Why Your Shoelaces Always Come Untied

Berkeley researchers believe your shoelaces coming untied is just a matter of time. Their study found that unwanted untying comes from two forces combining to replicate the effect of the wearer intentionally pulling the laces undone. The research was originally done to explore why two different versions of the common “bow tie” knot have differing […]

Quantum Mechanics Explained in 5 Minutes (With Added Ducks) [Video]

Quantum mechanics explained in 5 minutes with the help of ducks. Warning: language. What a silly way to build a universe. [exurb1a]

Big Question: Why did we stop going to the moon? [Video]

In this episode of the Mental Floss show, host Craig Benzine explains the reason why we stopped going to the moon. [Metal Floss]

What If You’re Born Without Sympathy & Empathy?

Most of us are born with all our emotions in place, but what if a few crucial feelings were removed? In this video, youtuber Life Noggin explores this possibility [Life Noggin]

Brains May Make Automatic Memory Back-Up

The way brains form memories could be completely different than previously believed according to new research. It suggests we make two simultaneous memories: one for short-term and one for the long-term. Until now the prevailing belief was that the hippocampus creates a memory that is then transferred to the cortex. That was partly derived from […]

The Bayesian Trap: The Bayes’ Theorem Explained

Bayes’ theorem explained with examples and implications for life. [Veritasium]