domingo, 24 de febrero de 2019

'Grandmother effect' helps explain human longevity - STAT

'Grandmother effect' helps explain human longevity - STAT

First Opinion

‘Grandmother effect’ helps explain human longevity

By HAIDER WARRAICH


MARK MAKELA/GETTY IMAGES
The grandmother effect, first suggested in 1966, helps explain why humans have such long life spans. Two new studies back up this notion.

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