News tagged with population size

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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 ...

dateApr 30, 2013 in Evolution
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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 ...

dateOct 05, 2009 in Mathematics
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Honeybees show tipping points

Parasites, lack of food, cold snaps, pesticides, and poor management all can stress honeybee colonies, making it difficult to pin their collapse on a single source. However, in controlled field tests, honeybee ...

dateMay 16, 2014 in Plants & Animals
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Giant moa had climate change figured out

(Phys.org) -- An international team of scientists involving researchers from the University of Adelaide has used ancient DNA from bones of giant extinct New Zealand birds to show that significant climate and ...

dateAug 06, 2012 in Plants & Animals
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