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Stephen Juan

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Diving Board from Seattle Municipal archives

From what height can you survive a dive into water?

Also in this week's column: What happens when you are executed by electrocution? What type of person is accident-prone? Why do you sometimes lose bowel function when scared? From what height can you survive a dive into water? Asked by Jack Crompton of Liverpool, UK The cliff divers of Acapulco amaze tourists with their …
Stephen Juan, 20 Oct 2006
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What type of person is accident-prone?

Also in this week's column: At what height can you survive a dive into water? Why do you sometimes lose bowel function when scared? What happens when you are executed by electrocution? What type of person is accident-prone? Asked by Charles Haywood of Cedar Rapids, Iowa "Accident-prone" means one suffers a greater number of …
Stephen Juan, 20 Oct 2006
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Can stun guns and tasers cause death?

Also in this week's column: Why do we doodle? Can stun guns and tasers cause death? Asked by Ian Leonard of London The chance of dying after being shot by a taser or stun gun is about one in 870. Dr William P Bozeman, professor of emergency medicine at the Wake Forest University School of Medicine in Winston-Salem, North …
Stephen Juan, 13 Oct 2006
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Why do we doodle?

Also in this week's column: Can stun guns and tasers cause death? Why do we doodle? Asked by Leanne Ward of New York City We often do it. We often don't realise it. Often, when caught doing it, we are embarrassed to have to explain it. Surprisingly, these nonsense scribbles we leave behind on notepads, paper margins, …
Stephen Juan, 13 Oct 2006
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What are the scientific reasons for having sex?

Also in this week's column: How does a cross-eyed person's view differ from others? What can you learn from the sound of someone's voice? What are the most widely practiced religions of the world? What are the scientific reasons for having sex? Asked by Jill Howard of Alexandria, Virginia, USA The reasons for not engaging …
Stephen Juan, 06 Oct 2006
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What are the most widely practiced religions of the world?

Also in this week's column: What are the scientific reasons for having sex? How does a cross-eyed person's view differ from others? What can you learn from the sound of someone's voice? What are the most widely practiced religions of the world? Asked by Charlene Dupree of Toronto There are some 4,300 religions of the world …
Stephen Juan, 06 Oct 2006
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What can you learn from the sound of someone's voice?

Also in this week's column: What are the scientific reasons for having sex? How does a cross-eyed person's view differ from others? What are the most widely practiced religions of the world? What can you learn from the sound of someone's voice? Quite a bit it seems. There is considerable evidence that the sound of a person's …
Stephen Juan, 06 Oct 2006
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How does a cross-eyed person's view differ from others?

Also in this week's column: What are the scientific reasons for having sex? What can you learn from the sound of someone's voice? What are the most widely practiced religions of the world? How does a cross-eyed person's view differ from others? Asked by Michel Durinx of Leiden, The Netherlands The medical term for "crossed- …
Stephen Juan, 06 Oct 2006
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Can flossing your teeth prevent a heart attack?

Also in this week's column: Why are people so often in denial? Can your hair turn white as a result of shock? What is the difference between a virus and a bacterium? Can flossing your teeth prevent a heart attack? Asked by Ginger Whitlam of Adelaide, Australia Ask your physician about this one, not a mere anthropologist. …
Stephen Juan, 29 Sep 2006
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What is the difference between a virus and a bacterium?

Also in this week's column: Why are people so often in denial? Can flossing your teeth prevent a heart attack? Can your hair turn white as a result of shock? What is the difference between a virus and a bacterium? Asked by Russell Stapleton of Melbourne, Australia Viruses and bacteria are both capable of killing humans and …
Stephen Juan, 29 Sep 2006
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Can your hair turn white as a result of shock?

Also in this week's column: Why are people so often in denial? Can flossing your teeth prevent a heart attack? What is the difference between a virus and a bacterium? Can your hair turn white as a result of shock? Asked by Ingrid Smith of Chatswood, NSW, Australia Theoretically, any sudden severe shock, accident, illness or …
Stephen Juan, 29 Sep 2006
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Why are people so often in denial?

Also in this week's column: Can flossing your teeth prevent a heart attack? Can your hair turn white as a result of shock? What is the difference between a virus and a bacterium? Why are people so often in denial? Asked by Ron James of Manchester, UK In the psychological sense, denial is a defense mechanism in which a …
Stephen Juan, 29 Sep 2006
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Could you be addicted to the internet?

Also in this week's column: Why are we not irritated by the volume of our own voice? Is there a speed or stride where running is more efficient? Why are so many humans near sighted? Can you be addicted to the internet? Asked by Ian Anderson of Aberdeen, Scotland Internet Addiction Disorder (IAD) is one of the new …
Stephen Juan, 22 Sep 2006
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Is there a speed or stride where running is more efficient?

Also in this week's column: Can you be addicted to the internet? Why are we not irritated by the volume of our own voice? Why are so many humans near sighted? Is there a speed or stride where running is more efficient? Asked by Ville Herva of Espoo, Finland Optimal stride What makes an optimal stride? It seems that nobody …
Stephen Juan, 22 Sep 2006
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Why are so many humans near sighted?

Also in this week's column: Can you be addicted to the internet? Why are we not irritated by the volume of our own voice? Is there a speed or stride where running is more efficient? Why are so many modern humans near sighted? Asked by Alan Harper of Oakland, California, USA The eye receives rays of light and bends them so …
Stephen Juan, 22 Sep 2006
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Why are we not irritated by the volume of our own voice?

Also in this week's column: Why are so many humans near sighted? Is there a speed or stride where running is more efficient? Can you be addicted to the internet? Why are we not irritated by the volume of our own voice? Asked by Vincent Rot of Heemstede, The Netherlands How can we stand our own shouting? After all, we're …
Stephen Juan, 22 Sep 2006
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Are there people with no sense of smell?

Also in this week's column: Why does natural selection take so long to get results? Why isn't pubic hair the same colour as hair on your head? Are there people with no sense of smell? Asked by Lucy Altmann of St Kilda, Victoria, Australia People who cannot smell suffer from some form of nasal dysfunction. Anosmia is the …
Stephen Juan, 15 Sep 2006
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Why does natural selection take so long to get results?

Also in this week's column: Why isn't pubic hair the same colour as hair on your head? Are there people with no sense of smell? Why does natural selection take so long to get results? Asked by Colin Jackson of Telford, UK The reader further asks, "when controlled breeding programs can get results in a relatively much shorter …
Stephen Juan, 15 Sep 2006
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Why isn't pubic hair the same colour as hair on your head?

Also in this week's column: Why does natural selection take so long to get results? Are there people with no sense of smell? Why isn't pubic hair the same colour as hair on your head? Asked by Hannah Swain of The Hague, The Netherlands Just as with skin, the colour of hair is determined by the amount of melanin in the outer …
Stephen Juan, 15 Sep 2006
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Can you become intoxicated by the power of suggestion?

Also in this week's column: Why can't I remember my own birth? Why don't we suffer from e. coli all the time? Why do some people feel the cold more than others? Can you become intoxicated by the power of suggestion? Asked by Jeff Johnson of Sheffield, United Kingdom Mind over matter goes a long way. Reports of intoxication …
Stephen Juan, 08 Sep 2006
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Why don't we suffer from E. coli all the time?

Also in this week's column: Can you become intoxicated by the power of suggestion? Why can't I remember my own birth? Why do some people feel the cold more than others? Why don't we suffer from E. coli all the time? How soon does E.coli colonise in the intestines of a newborn baby, and how does it get into the intestines? …
Stephen Juan, 08 Sep 2006
The Register breaking news

Why do some people feel the cold more than others?

Also in this week's column: Can you become intoxicated by the power of suggestion? Why can't I remember my own birth? Why don't we suffer from e. coli all the time? Why do some people feel the cold more than others? Asked by Mick Higgins of Toronto, Canada Human body temperature is a measure of the body's ability to keep, …
Stephen Juan, 08 Sep 2006
The Register breaking news

Why can't I remember my own birth?

Also in this week's column: Why don't we suffer from e. coli all the time? Why do some people feel the cold more than others? Can you become intoxicated by the power of suggestion? Why can't I remember my own birth? Asked by Jon Bovard of London, United Kingdom The subject of birth memory is very controversial among human …
Stephen Juan, 08 Sep 2006
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What is a Confessing Sam?

Also in this week's column: What is the purpose of tickling? Why do your hands turn white when you wash the dishes? Why do you sometimes shiver when you wee? What is a confessing Sam? Asked by Casey Filocamo of Edmonton, Alberta "Confessing Sam" is the term in criminal psychology for a person who makes a false confession …
Stephen Juan, 01 Sep 2006
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Why do you sometimes shiver when you wee?

Also in this week's column: What is a Confessing Sam? What is the purpose of tickling? Why do your hands turn white when you wash the dishes? Why do you sometimes shiver when you wee? Asked by John Rae of Clapham, United Kingdom Shiver wee? This is not to be confused with chivalry (the valorous qualities of a knight or …
Stephen Juan, 01 Sep 2006