Over millions of years, retroviruses, which insert their genetic material into the host genome as part of their replication, have left behind bits of their genetic material in vertebrate genomes.
The ebola virus is one of the nastiest pathogens known to man. It corrodes blood vessels and stops clotting, leaving most of its human victims bleeding to death through their pores. And guinea pigs — along with opossums, wallabies and insect-eating bats — have it in their genes.
10 ans ça représente une période considérable à l’échelle du web. Il s’est passé un nombre de choses considérable au cours de cette décennie et le web de l’époque ne ressemble plus du tout au web d’aujourd’hui. Mais en est-on réellement certain ?
It's an experiment in scale: each event in the Evolution of Life fades gradually over the course of the minute, leaving typographic traces that echo all the way to the present day, just as our blood still bears the salty tang of our most ancient evolutionary ancestors.
Most of the linguistic functions in humans are controlled by the left cerebral hemisphere. A new study of captive chimpanzees suggests that this "hemispheric lateralization" for language may have its evolutionary roots in the gestural communication of our common ancestors.