In the autumn the monarch butterfly flies from Canada to Mexico, which is a distance of approximately 3,200 kilometres (2,000 miles).
Getting back to our routes
Getting back to our routes A new theory regarding the evolution of
chimpanzees, gorillas and humans suggests that only one ape species
migrated from Africa to Eurasia and evolved into the common
ancestor of hominids, then returned to Africa. This contradicts the
majority of existing theories, which involve at least six
migrations of ape species out of Africa, where most species then
became extinct. 1 AUGUST 1998, P. 14
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