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If all the money in the US only totals 8 trillion dollars, how can the New York Stock Exchange have stocks valued at 26 trillion dollars? Tune in as Marshall Brain breaks down the practice of stock capitalization in this podcast from HowStuffWorks.com.
What causes that howling sound in PA systems?
A public address system's speakers emit strange noises, or feedback, when sound gets re-amplified. Get a detailed explanation of how feedback occurs in this podcast from HowStuffWorks.com.A public address system's speakers emit strange noises, or feedback, when sound gets re-amplified. Get a detailed explanation of how feedback occurs in this podcast from HowStuffWorks.com.
Why shouldn't you go swimming right after a meal?
As children, many of us have been admonished not to go swimming for at least an hour after eating. But, as it turns out, there's biology behind this commonplace advice. Tune in to this episode to find out why you shouldn't swim right after you eat.
Why can you hear the ocean in a seashell?
There are various theories about why you can hear ocean-like sounds when you hold a seashell up to your ear. Marshall Brain explains what you're probably hearing in that seashell -- and why you don't need a shell to hear it -- in this episode.
What do those diamond-shaped signs on buildings mean?
The National Fire Protection Agency, or NFPA, uses these signs to indicate hazardous materials stored in an unknown building. Listen in to learn how the signs work -- and how they help firefighters -- in this podcast from HowStuffWorks.com.
Should you turn your computer off when it's not in use?
When it comes to the question of whether or not you should turn off your computer when you're not using it, there's no simple answer. Tune in to get Marshall's thorough take on the topic in this podcast from HowStuffWorks.com.