As the global population hits seven billion, experts are warning that skewed gender ratios could fuel the emergence of volatile "bachelor nations" driven by an aggressive competition for brides.
Social Sciences
Oct 26, 2011
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The gaudy plumage and acrobatic displays of birds of paradise are a striking example of sexual selection, Charles Darwin's second great theory of evolution. But new research shows that this powerful process may collapse when ...
Evolution
Sep 12, 2011
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While the early bird might catch the worm, it's the quick bird that lands the ladies, according to new research into the running performance of an Arctic cousin of the grouse.
Plants & Animals
Aug 17, 2011
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Why are female foetuses aborted in China? Boys are considered a greater asset for farming, but why has the number of families in the cities who want a boy at any cost doubled?
Social Sciences
Jun 13, 2011
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The density of transposable (jumping) elements between sex chromosomes in primates may have important consequences for the studies of human genetic diseases, say Penn State University researchers.
Biotechnology
Apr 29, 2010
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In 1871, Charles Darwin sparked debate that continues today when he proposed that human sex differences evolved based on sexual selection. Sexual selection is Darwin's theory that certain physical, mental or psychological ...
Evolution
Apr 13, 2010
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A new study challenges long-standing expectations that men are promiscuous and women tend to be more particular when it comes to choosing a mate. The research, published by Cell Press in the April issue of the journal Trends ...
Evolution
Apr 24, 2009
6
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