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How Aliens Work
science.howstuffworks.com/space/aliens-ufos/alien-physiology.htm
Alien life forms would probably differ from those on Earth but still adhere to certain principles. Learn about astrobiology and the search for alien life forms.
How Customs Works
science.howstuffworks.com/transport/flight/modern/customs.htm
To most people a trip through customs is just another stop in an airport or a country's borders. But customs agencies do much more for their countries' governments. In fact U.S. Customs raises more revenue than any agency except the IRS. Find out why and how they do it.
How Prenatal Testing Works
health.howstuffworks.com/pregnancy-and-parenting/pregnancy/issues/prenatal-testing.htm
During a pregnancy, different kinds of prenatal testing are an important part of the process. See how prenatal testing protects both the mother and child.
How the Sun Works
science.howstuffworks.com/sun.htm
The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. Learn about the sun.
How Forensic Dentistry Works
science.howstuffworks.com/forensic-dentistry.htm
Forensic dentistry, also known as forensic odontology, is a way of identifying people by their teeth. Forensic dentistry encompasses bite-mark analysis.
How Blowtorches Work
home.howstuffworks.com/blowtorch.htm
Blowtorches produce an exceptionally hot flame and harnesses that heat to mold and cut metal. Learn how the blowtorch revolutionized welding.
How Landslides Work
science.howstuffworks.com/environmental/earth/geology/landslide.htm
Landslides can be devastating, causing more damage than their triggers. Learn more about landslides and landslide causes.
How Fingerprinting Works
science.howstuffworks.com/fingerprinting.htm
Fingerprinting is a popular technique for identifying criminals and authenticating access. Learn about fingerprinting and its storied history.
How the ZeroHouse Works
home.howstuffworks.com/zero-house.htm
The zeroHouse may be costly to build, but the zeroHouse could certainly save you on energy bills. Read more about the zeroHouse.
How Butterflies Work
animals.howstuffworks.com/insects/butterfly.htm
Butterflies' lives are all about flight. Learn all about the lives of butterflies and what may happen to the butterfly in the future at HowStuffWorks.