The green pledges of Britain and the US are a step in the right direction if climate change goals are to be met and the world made a more sustainable place. But while global eco-initiatives that ultimately benefit mankind are a good thing, we must be alert to the hijacking of relatively reasonable green thinking by environmental extremists who believe the tide is turning their way. For those of us who live north of the border, it was disconcerting this week to find that Scotland is being targeted as the world’s first ‘rewilding nation’.