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How Does Herd Immunity Keep a Country Safe From Diseases?
science.howstuffworks.com/life/cellular-microscopic/herd-immunity.htm
Herd immunity relies on the principle of safety in numbers as far as vaccinations go. Find out why herd immunity is an important public health issue.
How Penny Per Page Might Work
computer.howstuffworks.com/penny-per-page.htm
The World Wide Web is known for its nearly unprecedented "free content." But can it stay that way? Learn how the penny-per-page revenue model might work.
How Astronauts Work
science.howstuffworks.com/astronaut.htm
Astronauts are adventurers and scientists who work in space. Learn who astronauts are and what they do in space and on Earth.
1960-1966 Ford Falcon
auto.howstuffworks.com/1960-1966-ford-falcon.htm
When the Ford Falcon was released in late 1960 in Australia, it challenged rival General Motors. Learn how the two companies competed.
How U.S. Health Care Reform Works
people.howstuffworks.com/u-s-health-care-reform.htm
U.S. health care reform didn't happen without a firestorm of controversy. Learn all about the details of the new U.S. health care reform.
How to Conserve Energy at Home
home.howstuffworks.com/green-living/how-to-conserve-energy-at-home.htm
What is "energy"? Where does it come from? How do we pay for it? Learn the answers to these questions, and find out how to live more efficiently in your home.
How Lethal Injection Works
people.howstuffworks.com/lethal-injection.htm
Lethal injection is not a light topic, but it's the subject of much debate. Find out about the various procedures.
How Green Pavement Works
science.howstuffworks.com/environmental/green-science/green-pavement.htm
Green pavement is porous, meaning that it permits water to seep through to the ground. Learn why green pavement is good for the environment.
How the Black Death Worked
history.howstuffworks.com/historical-events/black-death.htm
How did the Black Death kill 25 million people? The Black Death caused devastation and hysteria. Learn how the Black Death spread and its effects.
How Indoor Air Pollution Works
home.howstuffworks.com/home-improvement/household-safety/indoor-air-pollution.htm
Indoor air pollution can be up to 10 times worse than outdoor air pollution. Learn about indoor air pollution, its sources and its health effects.