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For our annual How It Works issue, we break down everything from the massive Falcon Heavy rocket to a tiny DNA sequencer that connects to a USB port. We also take a look at an ambitious plan for faster-than-light travel and dive into the billion-dollar science of dog food.
Plus the latest Legos, Cadillac's plug-in hybrid, a tractor built for the apocalypse, and more.

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Did you see? If you click on the photo gallery then you get to a page what has an URL named "7-gifts-your...."!!
Seven!! Not six!! Some mysterious force has deleted one?!
By the way.. You can send any of these gifts to me.. :)
from Austin, tX
The EMP bag isn't just for the end of the world.
There is a lot EMP out there from both natural and artificial sources. As electronics get ever more finer, they become ever more susceptible to stray radio signals from overpowered transmitters, sparking, defective motors etc.
A few years ago, I had a cable modem EMP'ed by a lighting strike on a tree about 60 feet from my house. The strike was no where near the external cabling and the cable was insulated in any case. Instead, the cabling in the house served as an antenna and radio signal from the lighting put enough energy into the cable to destroy the modems logic board with a camera-strobe like flash. Fortunately, the rest of my gear survived.
As things become more smart with things like RFID tags, people might find a need to protect smart items from unwanted detection or queries. The EMP bag will provide that protection. That's probably what it was actually designed for.