The human penis is 'conservative' compared to other members of the animal kingdom - and now a scientist reveals why this is.
Opinion
Tsuki on MSNOpinion
What scientists discovered about animals turning human pressure into opportunity
This video uncovers four remarkable species that have evolved in direct response to human expansion. Scientists reveal the surprising behavioral and physical adaptations shaping their survival.
Live Science on MSN
The evolution of life on Earth 'almost predictably' led to human intelligence, neuroscientist says
Neuroscientist Nikolay Kukushkin spoke to Live Science about how human consciousness evolved.
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