In the North Atlantic the Icelandic, the North Sea, and the Newfoundland cod stocks are currently overexploited. Overexploitation also characterised the Northeast Arctic cod stock, but effective management measures introduced in 1990 and the years thereafter have brought this stock within safe...

Developments in molecular biology will enable development of tests for genetic predisposition to multifactorial diseases. People identified with increased risk might be able to prevent or delay the onset of illness by medical treatment and/or changing their environmental exposure. But tests...