In creating the rankings, Money looked at the percentage of the population that is single and the median income.

《Money》在制作这个排行榜的时候，考虑到了单身人群比重和中间收入这两个指标。

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"There is no single gene, no single DNA marker, that would distinguish one population from another," Myers said.

“没有一个单独的基因，或单独的一个DNA标记，可以将不同的种群区分开来，”Myers说。

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However, he's not fully convinced that this can happen within a single population, as the authors suggest.

然而，正如作者暗示的，这种进化可能发生在单个种群里面，对此他半信半疑。

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The march of globalisation will create a single mega-population of people on the planet in which more and more viruses have the potential to survive and thrive.

ECONOMIST: Science

"Coupled with recent genetic data, our finding indicates that the Atlantic population -- and perhaps the world population -- are connected and may constitute a single population, " Skomal said.

CNN: Scientists discover winter home of world's second-biggest fish

While there is no doubt that wind, solar and geothermal have ample energy to power the planet--the sunlight that hits Earth in a single hour contains enough energy to fuel the human population for a year--they will need years to mature before they reach anything approaching their potential.

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