/u/BullsLawDan's posts in /r/askscience

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If I hang upside down for a few minutes, my head pounds so much I can't stand it. How can a fetus remain upside down for over a month without harm?

40 upvotes

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Why are (were) manual transmissions more efficient than automatics?

7 upvotes

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What causes a pregnant woman to go into labor?

6 upvotes

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In dating old rocks to determine things like the age of the Earth, how do we know what the original content was?

3 upvotes

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I want to use a 55-gallon drum to build a DIY water park tipping bucket for my kids, how should I weight it and where should the axle be?

2 upvotes

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Why/How did we evolve to enjoy unhealthy food so much?

1 upvotes

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If we took all the water out of a human, what would be left? What states/forms/etc

1 upvotes

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What are the chemicals that make up "new car smell," and has that smell changed over time as different manufacturing processes/substances have been used in vehicles?

1 upvotes

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How should people arrange themselves on a Tilt-A-Whirl to get the wildest (most spin) ride?

1 upvotes

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How are things like spices, mustard, and hot sauces zero calories?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If I hang upside down for a few minutes, my head pounds so much I can't stand it. How can a fetus remain upside down for over a month without harm?	40
Why are (were) manual transmissions more efficient than automatics?	7
What causes a pregnant woman to go into labor?	6
In dating old rocks to determine things like the age of the Earth, how do we know what the original content was?	3
I want to use a 55-gallon drum to build a DIY water park tipping bucket for my kids, how should I weight it and where should the axle be?	2
Why/How did we evolve to enjoy unhealthy food so much?	1
If we took all the water out of a human, what would be left? What states/forms/etc	1
What are the chemicals that make up "new car smell," and has that smell changed over time as different manufacturing processes/substances have been used in vehicles?	1
How should people arrange themselves on a Tilt-A-Whirl to get the wildest (most spin) ride?	1
How are things like spices, mustard, and hot sauces zero calories?	1