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How Food Preservation Works
science.howstuffworks.com/innovation/edible-innovations/food-preservation.htm
Because sustenance ensures our survival, food preservation is one of the oldest technologies developed by human beings. Find out what's being done to your food to make it last longer.
How Your Heart Works
health.howstuffworks.com/human-body/systems/circulatory/heart.htm
The heart is a vital organ that basically serves as a pump. Learn about heart chambers and valves, blood flow, heart's electrical system and blood supply.
How NATO Works
money.howstuffworks.com/nato.htm
The North Atlantic Treaty Organization (NATO) is built on an alliance between 30 North American and European countries. But it's much more than that.
How Tattoos Work
health.howstuffworks.com/skin-care/beauty/skin-and-lifestyle/tattoo.htm
Tattoos decorate the body with ink injected into the skin. Learn about creating tattoos, from sterilizing tattoo equipment to finding a tattoo parlor.
How Robot Armies Will Work
science.howstuffworks.com/robot-armies.htm
Robot armies could soon account for up to one third of all vehicles currently in service. Learn about robot armies and robot army development.
How Fraternities Work
people.howstuffworks.com/fraternity.htm
Fraternities provide college students with a chance to become leaders in the future. Learn about fraternities and find out how to pledge a fraternity.
How Carbon Tax Works
science.howstuffworks.com/environmental/green-science/carbon-tax.htm
A carbon tax is one of two market-based options that focus on lowering harmful emissions. Learn about the carbon tax and how a carbon tax can lower emissions.
How the Joker Works
entertainment.howstuffworks.com/arts/comic-books/joker.htm
Take an inside look at the comic-book history of the Joker, villain of the 2008 film The Dark Knight.
How the EPA Works
people.howstuffworks.com/epa.htm
The EPA was established in order to protect human health and the environment. Learn more about the EPA and some of the duties the EPA performs.
How Paperless Home Offices Work
home.howstuffworks.com/how-paperless-home-offices-work.htm
Paperless home offices reduce environmental impact, save money and increase office efficiency and security. Learn about paperless home offices at HowStuffWorks.