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Animals,


Evolution


Age record
Tall beginnings
A study of Darwin’s finches found that medium ground finches with smaller beaks survived better than big-beaked counterparts during a drought. The advantage was linked to a key gene, offering insight into the birds’ speedy evolution (SN: 5/28/16, p. 7).
Scientists have crowned a Greenland shark as the vertebrate with the longest known life span. Their analysis suggests the predator lived to an age of 392 years (SN: 9/17/16, p. 13).
Giraffes should thank genes that regulate embryonic development for their long necks and strong hearts (SN: 6/11/16, p. 9).
Evolution at speed
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