Related topics: population

Buried Coins Key to Roman Population Mystery?

(PhysOrg.com) -- The first century BC in Italy was culturally a brilliant age, unequaled by any other period in Roman history. It was a time of Cicero, Caesar, Vergil, Horace and many other major literary figures of the Antiquity.

Cheating favors extinction

Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit as a whole. A ...

Research shows male guppies reproduce even after death

Performing experiments in a river in Trinidad, a team of evolutionary biologists has found that male guppies continue to reproduce for at least ten months after they die, living on as stored sperm in females, who have much ...

Violence a matter of scale, not quantity, researchers show

Anthropologists have debated for decades whether humans living in tribal communities thousands of years ago were more or less violent than societies today. Researchers at the University of Notre Dame wonder if the question ...

Population trends: Another influence on climate change

Changes in population growth and composition, including aging and urbanization, could significantly affect global emissions of carbon dioxide over the next 40 years, according to a new study out next week.

Males were saved by agriculture

Around 12,000 years ago, settlers in the Fertile Crescent of West Asia domesticated a few wild plant and animal species. The emergence of agriculture is believed to have driven extensive human population growths, because ...

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