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10 Weird Patents That Google Owns

electronics.howstuffworks.com/future-tech/10-weird-patents-that-google-owns.htm

If you thought Google Glass was 'out there,' you'll be more surprised reading about these 10 weird patents that Google Owns at HowStuffWorks.

10 Insane Disguises That Actually Worked

science.howstuffworks.com/10-insane-disguises.htm

We're not talking about one of those laughable get-ups that celebs don when they want to go incognito for a latte. Nope, we're talking elaborate disguises -- from operatic to scientific.

How Emily Post Works

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Emily Post was America's etiquette expert during the Roaring 20s. Learn about her life and surprisingly open-minded career.

Why are the insides of tunnels usually covered in ceramic tile?

science.howstuffworks.com/engineering/civil/question674.htm

I've noticed that the insides of road and subway tunnels are usually covered in ceramic tile. Is there any particular reason for this or is it simply convention?

How do you replace a seal under a toilet?

home.howstuffworks.com/home-improvement/plumbing/question504.htm

A friend told me that the bad smell coming from my toilet indicates that the seal under the toilet is broken and needs to be replaced. He also said that I could probably do the job myself. I'd like to try. So how do you replace the seal underneath the toilet?