"Fire in the hole!" shouts an engineer as a detonator sparks. A second later, the shockwave and the thunder–a close shave with the last sight some people ever saw. The video apparently depicts work on Indianapolis' sewer system.
WATCH: shockwave in a tunnel
Mark Setrakian's Axis, a sinister-looking robotic hand that spins a globe
In this Tested video, Norm Chan visits the amazing robotics artist, Mark Setrakian. When I watched the first few seasons of Battlebots, it was always Mark's robots that delivered a serious wow factor. He seemed like he was on another level. In this video, I love the way he describes his design approach and the… READ THE REST
Coat hanger radio
Back in the day, coat hangers weren't just used for popping open a car door when you locked your keys inside. They also served as makeshift antennae to improve TV and radio reception. That DIY RF engineering inspired John Jerome Spina to patent an integrated coat hanger/radio. His 1976 patent expired in 1995, so get… READ THE REST
Wrecked rally car repaired in half an hour
If you think changing a set of tires in 1.82 seconds is amazing, wait until you see an absolutely wrecked Citroën restored to racing shape in 32 minutes. If you just want a nice tl;dw version of how this incredible feat is accomplished, jump to the 29 minute mark to see how they polish off… READ THE REST
Check out these 12 learning bundles that are on sale for just $20 apiece
So, how's this for a plan? We've rounded up 12 sets of career redefining training with top-notch instructional material. These course bundles contain guidance in coding with Python, creating in Adobe CC, building video games, investing in cryptocurrency, and so much more. All 12 bundles would cost less than $300. Now, we aren't endorsing that… READ THE REST
The Farting Frenchies card game is as silly as it sounds. It's also hilarious and fun
If you're a highly cultured, ultra-evolved lord or lady of high standing, this might be a topic you're going to want to avoid. We're about to talk about a game that focuses on dog flatulence. If that's a matter that instinctively makes you clutch your pearls and gasp in horror, we understand. Farting Frenchies: A… READ THE REST
This canopy tent assembles in minutes and protects the entire family
Everybody wants to enjoy the summer sun. But nobody wants to bake, so you bring an umbrella to provide a little shade. That's fine if there is one or maybe even two of you seeking protection. But if you've got more people, or even a couple of kids jockeying for position, one umbrella isn't gonna… READ THE REST