The cultural heterogeneity of the EU is attested to by 30m Muslims already within its borders.
They note that there's "substantial heterogeneity" in outcomes, with some newly unemployed getting less healthy and others using all their new free time to exercise and take up organic gardening.
By tweaking the soil's moisture and nutrient content to increase its heterogeneity, Dr Baer has found that she can affect how well a piece of habitat functions once it has been restored.
Second, as our understanding of the commons has become more complex, the design of economic policy instruments has become more sophisticated, enabling policy makers to address problems that are characterized by uncertainty, spatial and temporal heterogeneity, and long duration.
Such "expression heterogeneity" was unsuspected, but is exciting because it suggests that women could be more genetically variable than men.This kind of work is important for two reasons.
Foreign competition sifts and sorts firms, winnowing out the weakest firms and leaving a greater share of the market to their stronger rivals.Just as Mr Krugman found a clean way to account for economies of scale, Mr Melitz handles the heterogeneity of firms without spoiling the lines of his model.
In America, the cost of heterogeneity was a protracted and bloody civil war.
In EMs, heterogeneity in inflation allows us to divide the sample in "high" and "low" inflation episodes.
But to the degree the English share with, or borrow from, other peoples, that itself is a mark of Englishness: heterogeneity, easy borrowing, mongrelism.
Surely this winning combination of size and heterogeneity disproves the trade-off theory?The answer, says Mr Alesina, lies partly in history: as in many countries, borders are partly a legacy from the past.
The middle class is not a narrow special-interest group in the same way.This heterogeneity is important.
