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There are so many things in this world that are possible, and shattering glass with sonic force is one of them - but just how probable is it, really?

When an electron loses its partner, it creates a free radical. So is that free radical now potentially hazardous to your health?

The St. Louis Arch was so spectacularly designed that, when construction kicked off in 1961, many predicted an epic failure.

The @ sign is so much a part of the internet that it may surprise you to know it's been around for at least 1,500 years.

Does negative calorie foods exist? If so, what are they? Learn about negative calorie foods at HowStuffWorks.

Viruses need hosts to replicate and reproduce. So if a virus has no host, how long can it survive? It depends on a lot of factors.

Along with motion pictures, Hollywood has a knack for creating other things: controversy and scandal. So which scandals are the juiciest -- and why?

How are ambulances dispatched and why do they cost so much? HowStuffWorks takes a close look at the world of ambulances.

A short time ago at a convention not so far away... it's the 10 best Star Wars outfits of Dragon Con 2014!

Do you own Ugg boots? How did Uggs become so popular? Find out at HowStuffWorks.

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