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10 Unidentified Sounds That Scientists Are Seriously Looking Into

science.howstuffworks.com/science-vs-myth/unexplained-phenomena/10-unidentified-sounds.htm

"Stop, what's that sound?" Doesn't it creep you out when you don't know? There are lots of sounds out there that baffle even scientists.

How Pterosaurs Worked

animals.howstuffworks.com/extinct-animals/pterosaurs.htm

They were creatures of the air, but they aren't part of the avian family tree - and don't call them dinosaurs. What was life like for the pterosaurs, and what has sparked renewed interest in these flying reptiles?

10 Etiquette Rules Nobody Follows Anymore

people.howstuffworks.com/10-etiquette-rules-nobody-follows-anymore.htm

There are a few etiquette rules that nobody follows anymore, from wedding dress colors to RSVPs. See 10 old etiquette rules to learn more.

10 Careers Where You Can Eat for a Living

money.howstuffworks.com/10-careers-eat-for-living.htm

You love to eat, and you need to money to live. View 10 careers where you can eat for a living at HowStuffWorks.

How Thermal Imaging Works

electronics.howstuffworks.com/thermal-imaging.htm

Thermal cameras take photos of heat, rather than visible light. Find out how temperature is captured as an image.

How Van de Graaff Generators Work

science.howstuffworks.com/transport/engines-equipment/vdg.htm

Van de Graaff generators are famous for producing static electricity. Learn about Van de Graaff generators and find out why Van de Graaff generators were invented.

How Cameras Work

electronics.howstuffworks.com/camera.htm

Cameras and photography have transformed how we see the world. Learn about cameras, photography, how 35mm cameras work and about making a homemade camera.

Railroads of the 1920s

history.howstuffworks.com/american-history/railroads-of-the-1920s.htm

Railroads of the 1920s reflected a time of uncertainty in the industry at the time. Learn more about the railroads of the 1920s.

How the First Olympics Worked

entertainment.howstuffworks.com/first-olympics.htm

Before today's spandex-clad (and some sequined) Olympians set their sights on the gold, silver or bronze, ancient Greeks competed for victory. How did the games begin, and why were the athletes gunning for olive oil?

How Seed Banks Work

science.howstuffworks.com/environmental/green-science/seed-bank.htm

Seed banks store our world's seeds, in case disaster wipes out a plant species. Find out how seed banks protect our future.

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