NEW YORK, Nov.

A new study of biological invasions in Europe found they were linked not so much to changes in climate or land cover, but to two dominant factors - more money and more people.

Details of the lifestyle of mink, which escaped from fur farms and now live wild in the UK, have been revealed through analysis of their whiskers.

The European mink, Mustela lutreola, is a species catalogued as in danger of extinction, due to the large decline in their population over the past century.

By John Dean A CAMPAIGN has been launched to work with businesses and other organisations to rid the countryside of damaging alien species.