tl;dr black powder and gunpowder must be under pressure to properly deflagrate, and they’re unassuming
@NPR:
They are cheap, easy to build and inconspicuous. And as the explosions this week at the Boston Marathon show, pressure cooker bombs can be devastatingly effective weapons.
But why would someone place a bomb inside a common kitchen implement? As we explained two years ago in an article about the increased use of pressure cookers (for cooking, not bombs):
“It works using basic principles of science: Water normally boils at 212 degrees Fahrenheit — and doesn’t get hotter. But under pressure, it boils at about 242 F and stays there. Raising the boiling point lets the food cook at the higher temperature, which cuts cooking time by two-thirds or more.”
The same principle that increases the boiling point inside a pressure cooker also can be used to amplify the force of an explosive.
As NPR science reporter Geoffrey Brumfiel notes, “If you seal a pressure cooker, the steam builds up in the vessel. It helps to raise the temperature and cook food, but sometimes when the cooker fails, you get a very energetic release.”
“What’s wrong with him?” “Oh, he’s deaf. My fault.” (img by KitUp)
You can get a copy of the latest edition of the Ranger Medic Handbook in a few days courtesy North American Rescue, purveyor of military medical equipment and Casualty Response (first aid) Kits. This pocket-sized and ruggedized reference is written by US Ranger combat medics to include handy information like:
Updated Trauma Protocols, Tactical Medical Emergency Protocols, Pharmacology, Casualty Operations and Planning, and Tactical Combat Casualty Care updates. This significant update provides an efficient medical reference, expanding on both Trauma and Medical Emergency Considerations for providers at various levels.
For forty bucks you can get two, one to keep with your first aid kit and one to keep on your toilet tank library for study. Any money made goes to the Sentinels of Freedom so hell, buy one for your car, too. ($40)
I love the smell of industrial solvents in the morning. (img by Eric Jusino)
Before I knew urban exploration was a thing and before my friends and I toured an underground nuclear missile silo, a photographer friend of mine (we’ll call him Steve) and I “broke” into an abandoned rubber factory to take pictures.
If you’ve been in Denver, you’ve probably seen Gates Rubber Factory, a Gotham-looking building complex right off Broadway:
When the sun goes down, Batman comes out and plays here. (img by Beth Jusino)
It’s a superfund site full of hideous chemicals known for slowly killing Denver residents (don’t drink the Platte), making and breaking the fortunes of real estate developers, and killing urban explorers.
At the time (a few months before the urbexp guy bit it and security went through the roof), it was stupidly easy to get into. Here are the lessons I learned getting in and checking the place out: (more…)
The Mars Science Laboratory is on final approach to the planet. Once inside the Martian atmosphere, the Mini Cooper sized Curiosity rover will be lowered to the surface by rocket powered crane on August 5th. Curiosity’s mission objectives will be: measure surface radiation, search for organic compounds in the Martian soil, determine the state and cycle of water and carbon dioxide on the planet.
OK, so this guy’s five tips really boil down to “have important stuff and keep it safe.” Having plenty of important stuff is important for dealing with serious stuff. Gotcha.…
Bruce Schneier’s a security specialist with his own Internet meme. And while most people believe that technology elevates, improves things, Schneier holds that technology magnifies, makes things bigger, good and…
I generally don’t like knives that you have to think about using, have to think about holding in a certain way, or have to train with in general. That’s either…
“After the flash, nothing happened for about three minutes. Then we rushed outdoors The door was made of glass, a shock wave made it hit us,” said Yekaterina Melikhova. ……
tl;dr FOR THE LOVE OF CHRIST THERE IS NOT ENOUGH FIRE IN THE NUCLEAR CENTER OF THE SUN TO DESTROY THIS ABOMINATION @Think Spain: Police in San Sebastián de la…
tl;dr black powder and gunpowder must be under pressure to properly deflagrate, and they’re unassuming @NPR: They are cheap, easy to build and inconspicuous. And as the explosions this week…
tl;dr they did something; so can you @MoJo: “Forced marches” or “humps” are a regular part of military training, brisk walking over tough terrain while carrying gear that could help…
tl;dr Bitcoin works, at least for fast transactions @Reason: Time will tell whether the gold bugs or the skeptics are right, but what’s being overlooked is that it doesn’t matter…
tl;dr damn Gov’t, you scary! @Guns.com: Prior to the fictional events in “Breaking Bad” ricin was used several times as both a tool of assassination as well as a weapon…
tl;dr if it was Bush people would be pissed as hell @CJR: James Goodale has a message for journalists: Wake up. In his new book, Fighting for the Press (CUNY Journalism Press,…
You don't have to stockpile supplies and tin foil by the yard in order to die less.
Dying less means living more and better. It’s being strong, healthy, competent, and informed. And having a little fun along the way.
We sift through tons of information about politics, survival, and just plain handy DIY stuff and distill the bits that matter, the bits that normal people can make, do, or live in their day to day.