New hope for SAD sufferers

A "BODY clock" discovered by Edinburgh University scientists could help find treatments for seasonal affective disorder.

Researchers have found out more about how seasonal genes are controlled and made links with the effect in other animals.

Prof Dave Burt, from the Roslin Institute at the university, said: "For more than a decade scientists have known about the presence of this mysterious molecule tuberalin, but until now nobody has known quite how it worked."