For many of us, concern for the planet and our footprint upon it is a part of everyday life. Our newsfeeds are full of reports of climate disaster, plastic pollution in our oceans and a collapse in worldwide biodiversity. We know 'something must be done'.

But this is a complex and confusing proposition. What exactly must be done? By whom? And in a world of eight billion people, what can any one of us do that can genuinely make a difference?Based on her own journey trying to 'tread more lightly on the Earth', Lucinda provides a crash course in the facts of the problem, plus tips on reducing your carbon footprint, plastic use and impact on biodiversity.