Unless you’ve been in a vehicular accident (which I hope you haven’t), you won’t notice how much road barriers have evolved over the years. Despite what you see on television, these accident prevention materials have actually gotten better at saving lives rather than ending them. It just so happens that the small percentage of deaths related to them are the ones that always make the news. https://www.youtube.com/watch?v=w6CKltZfToY&ab_channel=AndrewLam In this informative video by Andrew Lam, he mentioned how Americans have the Manual for Assessing Safety Hardware (MASH) to thank for that. To put it simply, MASH is a strict set of guidelines that manufacturing companies have to adhere to when making…

Back in the 18th century, travelers on the American frontier had to constantly move to get stuff done. Whether it’s to trade, settle, or explore, chances are you’d need a gun to feed and protect yourself. Be it a musket or a pistol, guns back in the day used circular bullets mixed with gunpowder to get the job done. You could easily carry gunpowder, but what about ammunition? https://www.youtube.com/watch?v=zQIZSIoiKSI&ab_channel=Townsends According to Townsends – a channel dedicated to preserving the 18th-century lifestyle – ammo was sold by traders on the frontier. You would find lead bullets of varying sizes at different trading posts, but these would often not fit the gun you…

This is one of those instances where art begets art. Inspired by the high-octane movie John Wick: Chapter 2, the guys at Corridor decided to put their own spin on the mass-murdering hitman… only with a more kid-friendly arsenal. Meet Nerf John Wick: https://www.youtube.com/watch?v=9MrnAJsxL8c&ab_channel=Corridor The 3-minute video showcases moves lifted directly from the film, such as using an enemy’s chest to conveniently reload a shotgun as well as a couple of moves that could only be done with Nerf guns. For instance, there is no way you could catch an opponent’s bullet and use it to kill someone else if they were using a real gun. But thanks to the…

Near the shores of Los Angeles stands the Ivanhoe reservoir. And covering the entire surface of this 39-hectare (96-acre) wide reservoir are over 96 million shade balls. You must probably be betting that this is the world’s biggest ball pit and you might be right! But those balls serve a greater purpose than providing the local population a place to host kids’ parties. https://www.youtube.com/watch?v=uxPdPpi5W4o&ab_channel=Veritasium A few years ago, Derek Muller of Veritasium took a boat trip to the middle of the Ivanhoe reservoir. Here, he picked the brains of its custodians and found out just why this reservoir which provides so many people with clean drinking water has so many…

Unlike the expensive 3D printers, a 3D pen isn’t the most precise instrument for making printed models. That’s not entirely the pen’s fault, however. By adding in a human element, you’re effectively reducing the speed and accuracy for a more personalized 3D print. Still, some people like that human touch – even if it doesn’t necessarily look as good as the things printed out of a 3D printer. Over the course of 51 hours, the creator of the Build-a-Skill YouTube channel documented his journey from 3D pen printing novice to… a somewhat adept 3D pen printing artist: https://www.youtube.com/watch?v=GcONBptTGbk&ab_channel=Build-a-Skill From drawing spindly 2D lines on paper to making a fully-formed robot,…

We’ve all been told never to consume soda and Mentos at the same time. It is pretty obvious why: you don’t want to see yourself vomiting some foam. How would that happen? Well, it’s pretty simple. This scotch mint can nucleate the carbon dioxide in the soda, resulting in a rapid increase in the latter’s precipitation rate. If you want to know what that looks like without subjecting yourself to a really bad stomach ache, look no further: https://www.youtube.com/watch?v=2I3UuhKEQ6o YouTube channel Toys King took a ton of carbonated drinks and poured them all into a water drum. Then, armed with some Mentos and baking soda, they shot the contents sky…