Richard Spilsbury

Depression, a medical disorder distinct from sadness or grief, affects people around the world of all ages, though many of them are not diagnosed or do not receive adequate treatment. This book explains the symptoms of depression, how it can vary across individuals, how to diagnose it, and ways to treat it and cope with it. The genetic risk factors of depression are explored, including how genetic therapy may help people with depression in the future....

Discusses how fish differ from other animals, their habitat, how they are born and develop, what they eat, how they reproduce, and their typical life expectancy.