horatio
  • Member for 10 years, 10 months
  • Last seen more than 8 years ago
Do lower speed limits reduce gasoline usage?
Accepted answer
19 votes

There are two very obvious reasons that higher speeds can reduce gas mileage: 1) drag and wind resistance: the faster you go the more the wind pushes back. Drag force scales with the square of ...

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Japan's earthquake and the Earth's axis
Accepted answer
9 votes

This is actually pretty interesting. If you consider that figure skaters can change their rotation by adjusting the placement of their body mass (e.g. their arms), it is apparent that a simple ...

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Why do we not have vehicles that meet or exceed the MPG ratings of vehicles that were available in the 1990s
7 votes

There are always outliers, but there is a standard in place for the US called CAFE (and a stricter standard in Europe) which requires the Corporate Average Fleet Economy to meet a minimum. Passenger ...

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Do simple checklists applied in operating theatres significantly reduce the rates of complication and death from surgery?
4 votes

It is hard to determine what the percentages quoted in your question are referring to without a cite, but a quick search yields this: ( http://www.nejm.org/doi/full/10.1056/NEJMsa021721 ) "Risk ...

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Does homeopathic zinc (Zicam) help with the common cold?
4 votes

Regarding the question of zinc and the common cold: the evidence clearly says "maybe." There are some studies which show effect and an approximately equal set showing none. (see: http://ods.od.nih.gov/...

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