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SCIFs Are Spy-proof Places for America's Top Secrets

science.howstuffworks.com/engineering/structural/scif.htm

SCIFs are spy-proof, highly secure facilities designed for viewing and working with sensitive national security secrets. We talk to a former general counsel for the NSA to find out how they work.

What Does CC Mean in Email?

computer.howstuffworks.com/e-mail-messaging/what-does-cc-mean-email.htm

Most of us use the CC function in our email accounts all the time, but do you know what CC actually means and how it works?

Crinkle Crankle: The Serpentine Wall With a Funny Name

science.howstuffworks.com/engineering/structural/crinkle-crankle-wall.htm

Crinkle crankle walls undulate, mimicking the shape of a snake's slither. But what's the purpose of these wavy walls?

Companion Planting: The Do's and Don'ts of Growing Plants Together

home.howstuffworks.com/companion-planting.htm

Learn which plants benefit each other - and which plants shouldn't be neighbors - to get the most out of your garden.

Lifelike Robo Pets Help Seniors Combat Loneliness

health.howstuffworks.com/mental-health/dementia/robotic-pets.htm

Robotic companion animals have been proven to reduce stress, anxiety and antipsychotic drug use among older people, especially those with with dementia.

Hugelkultur Bed: Creating the Perfect Soil for Your Garden

home.howstuffworks.com/gardening/garden-design/hugelkultur.htm

If you're looking for an easy, organic way to improve your soil and create a permanent, thriving garden bed, a hugelkultur bed will check all the boxes for you.

Moissanite vs. Diamond: Which Is the Best Engagement Ring?

science.howstuffworks.com/environmental/earth/geology/moissanite-vs-diamond.htm

What's the difference between moissanite and diamonds? And which of these brilliant stones wins out when it comes to the engagement ring competition?

Does Your Home Need a Whole-house Surge Protector?

electronics.howstuffworks.com/whole-house-surge-protector.htm

A whole-house surge protector can defend an entire house from voltage spikes coming off the electrical grid.

The Copperhead Snake Is Seldom Lethal But Always Venomous

animals.howstuffworks.com/snakes/copperhead-snakes.htm

Though a copperhead will bite if disturbed, and it is venomous, its bite is rarely fatal.

What is clean coal technology?

science.howstuffworks.com/environmental/green-science/clean-coal.htm

Clean coal reduces the harmful emissions caused by the burning of fossil fuels. Learn about the development of clean coal and the uses for clean coal technology.

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