New Scientist: TO SOME, it will smack of deserting a sinking ship. Young people are leaving their island homes in the Pacific and Caribbean in search of jobs and higher education. Without youthful citizens, small islands will struggle to cope with the effects of rising sea levels. So says a report from the UN Environment Programme (UNEP). "The lack of opportunity pushes the best and brightest to look elsewhere," says the report. The exodus from islands including Samoa, Granada, Antigua and Dominica accounts for...