Prehistoric humans rarely mated with their cousins

Today, more than 10 percent of all global marriages occur among first or second cousins. While cousin-marriages are common practice in some societies, unions between close relatives are discouraged in others. In a new study, ...

Researchers study best use of 'whitespace' spectrum

(Phys.org)—The demand for faster, more mobile Internet access for smartphones, tablets and laptops does more than strain the available space we have in our pockets and bags. There's a finite amount of wireless spectrum ...

Study details the quirky geography of knowledge-sharing

Scholars have long been interested in tracking "knowledge spillovers," the way technical and intellectual advances spread among communities of researchers and innovators. And a significant body of work has shown that distance ...

Medicinal plants thrive in biodiversity hotspots

With their rich repertoire of anti-infective substances, medicinal plants have always been key in the human fight to survive pathogens and parasites. The search for herbal drugs with novel structures and effects is still ...

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