A plan to re-introduce wolves, lynx, bears, and wild boar to Scotland has been unveiled by environmentalist landowner Paul Lister. Although there have been repeated calls for this to happen for a long time in the country, they always seem to have been overshadowed by farmers worried for their livestock. In most of northern Europe, however, these predators survive and enhance the environment, as they once did in Scotland, rather than causing any serious problems, and their re-introduction would be a wonderful boost to the country's biodiversity.