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How Two-stroke Engines Work
science.howstuffworks.com/transport/engines-equipment/two-stroke.htm
A car engine uses a four-stroke cycle -- how can two strokes accomplish the same tasks? Learn all about the two-stroke engine, where it's used and how it compares to a four-stroke.
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.
10 Fictional Spacecraft We Wish Were Real
science.howstuffworks.com/10-fictional-spacecraft-we-wish-were-real.htm
In honor of Douglas Adams and galactic hitchhikers everywhere, we submit this list of 10 spacecraft that we hopelessly pine for. Mindboggingly beautiful!
How do you build an underwater tunnel?
science.howstuffworks.com/engineering/structural/build-underwater-tunnel.htm
Underwater tunnels are so commonplace that we rarely think of the great dangers -- and extreme construction techniques -- these modern wonders require. With the opening of the Marmaray Tunnel in October 2013, it's time to take a second look.
How Helmet Cameras Work
electronics.howstuffworks.com/gadgets/high-tech-gadgets/helmet-camera.htm
Helmet cameras allow you to capture shots that would be impossible otherwise. Learn about cool uses for helmet cameras and how they work.
How the 'Alien' Xenomorph Works
entertainment.howstuffworks.com/alien-xenomorph.htm
You've always wondered how the xenomorph in 'Alien' worked. Now it's time to go behind the scenes and meet the xenomorph in 'Alien.'
How Night Vision Works
electronics.howstuffworks.com/gadgets/high-tech-gadgets/nightvision.htm
Most of us instinctively think of darkness as a way to hide. Night vision has changed all that. So, how can you see someone standing over 200 yards away on a pitch-black night? Find out.
Can You Identify These Barbie Careers From the Past Four Decades?
play.howstuffworks.com/quiz/can-you-identify-these-barbie-careers-from-the-past-four-decades
Who you callin' a dumb blonde? Far from being just a pretty face, Barbie is a career girl at heart. Sure, she got her start as a model, but Barbie went on to find professional success in medicine, business, professional sports and STEM, not to mention several stints as an astronaut!
Exploring Mars: Insights Into the Red Planet
science.howstuffworks.com/mars.htm
Since the 1960s, we've been captivated by the planet Mars. How different is our neighbor, and what have we learned about the most explored planet?
Cryptozoology: Hunting Bigfoot and Other Mysterious Beasts
science.howstuffworks.com/science-vs-myth/strange-creatures/cryptozoology.htm
Cryptozoology is the study of creatures that are rumored to exist. But for true believers, these "cryptids" are alive and well and lurking among us.