News tagged with mature males

Are elder siblings helpers or competitors?

Having elder siblings decreases mortality risk in childhood, but same-sex elder siblings are associated with lower marriage rates and fewer children for their younger siblings in adulthood, according to the ...

dateNov 22, 2012 in Social Sciences
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Sea lampreys fear the smell of death

A repellant for sea lampreys could be the key to better controlling one of the most destructive invasive species in the Great Lakes, says a Michigan State University researcher.

dateAug 06, 2011 in Ecology
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