A factor in shark attack increase: More people in water

Federal wildlife protections are helping sharks rebound, but they aren't the sole reason for the uptick in encounters between sharks and humans. Expanding human populations and growing use of beaches are major factors too, ...

Out of Eurasia, a great primate evolutionary bottleneck?

On the road to our modern human lineage, scientists speculate there were many twist and turns, evolutionary dead ends, and population bottlenecks along the way. But how large were population sizes of common ancestors of the ...

Examining the source behind Sherpa mountain fitness

The Sherpa population in Tibet is world-renowned for their extraordinary high-altitude fitness, as most famously demonstrated by Tenzing Norgay's ability to conquer Mount Everest alongside Sir Edmund Hillary. The genetic ...

Beachcombing for early humans in Africa

(Phys.org) —From the earliest modern humans to the present day, our species has evolved dramatically in both biological and behavioural terms. What forces prompted these momentous changes?

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