Across rich countries the share of those aged over 25 who have had some form of higher education is now 33%, against 28% of men in the same age group (see chart 3 for individual countries).

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Imagine having a group of display cubes when it comes time to plan the seating chart for a reception -- each cube could represent one individual, with a color-coded background and a name or photo up top, with different descriptive elements on each side.

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But NHTSA told CNN on Tuesday it no longer uses that chart "as there are many variables" that contribute to an individual's level of intoxication.

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