What will the next era of web culture bring?
It is one of the biggest mysteries
in biology: why do we, and many other animals, spend a huge proportion
of our lives simply sleeping? Surely sleep must have evolved to fulfil
some crucial biological function, such as refreshing the body or
rebooting the brain? That is what sleep researchers have been thinking
for some time. However, one leading researchers is now proposing a
radical rethink … sleep evolved simply to conserve energy, and to keep
us out of trouble.
Bianca Nogrady is a freelance science and medical writer and also a broadcaster for New Scientist magazine.