Search Results | sound
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How Helicopters Work
science.howstuffworks.com/transport/flight/modern/helicopter.htm
Believe it or not, the marvel we know as the helicopter began as a Chinese top consisting of a shaft - a stick - adorned with feathers on one end.
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.
How Dreams Work
science.howstuffworks.com/life/inside-the-mind/human-brain/dream.htm
Dreams combine verbal, visual and emotional stimuli into mystifying storylines. Learn about dreams, the meaning of common dreams, REM and controlling dreams.