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10 Unsolved Airplane Mysteries
science.howstuffworks.com/transport/flight/modern/10-unsolved-airplane-mysteries.htm
Since 1948, more than 100 aircraft have gone missing while aloft and never been found. Here are 10 unsolved airline mysteries from HowStuffWorks.
How Thermometers Work
home.howstuffworks.com/therm.htm
Thermometers are used in everything from medicine to cooking. Find out how thermometers gauge temperature and learn how to make your own!
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.
Is Fiberglass Dangerous?
home.howstuffworks.com/home-improvement/household-safety/dangerous-insulation.htm
Is fiberglass insulation dangerous? Fiberglass insulation is how we keep energy costs down. Learn why some think fiberglass is as bad as asbestos.
Unveiling the Mysteries of Ball Lightning: Is It Real?
science.howstuffworks.com/nature/climate-weather/atmospheric/ball-lightning.htm
Ball lightning wasn't widely believed to exist until the 1960s. Learn about ball lightning and theories about what ball lightning could be.
How Virtual Laser Keyboards Work
electronics.howstuffworks.com/gadgets/travel/virtual-laser-keyboards.htm
Virtual laser keyboards are great travel gadgets. Learn more about virtual laser keyboards at HowStuffWorks.
What Is a Green Roof?
science.howstuffworks.com/environmental/green-science/green-rooftop.htm
A green roof is a roof that is covered in plants, which reduces stormwater run-off and lowers cooling costs. Find out how a green roof can help the environment.
Is the army testing an invisible tank?
science.howstuffworks.com/invisible-tank.htm
An invisible tank could give any military a distinctive edge on the battlefield. Find out how the British army is developing an invisible tank.
How to Repair Plumbing Pipes
home.howstuffworks.com/home-improvement/plumbing/how-to-repair-plumbing-pipes.htm
Most plumbing problems occur at or near such fixtures as sinks, tubs, and toilets. Sometimes, however, the pipes themselves are the root of the problem. Learn how to repair pipes.
How to Treat Damaged Cuticles
health.howstuffworks.com/skin-care/nail-care/cuticle/treat-damaged-cuticles.htm
Want to know how to treat damaged cuticles? Visit HowStuffWorks to learn how to treat damaged cuticles.