Health and beauty, cleaning, laundry, food and drink, air freshening – the answer's a lemon. A zesty solution for cutting down on all the products we buy.

Over recent years the scale of plastic pollution and its chokehold on nature has floated to the top of people’s environmental priorities but remains low on the government’s agenda. Instead of putting the onus on individuals to buy plastic-free products, what if we lived in a world free from unnecessary plastic? And what would it take to get there?

Offsetting. Everybody’s at it. Shell says that it offsets the petrol that its customers buy. The aviation industry has said offsetting is how we can carry on flying. Some countries even want to offset their emissions. But what is carbon offsetting and does it work?

How can we be sure that the food we buy and the clothes we wear aren't doing more harm than good? Sustainability Analyst Clare Oxborrow explores how supply chains can negatively impact people and planet and why the UK needs a new law to hold companies to account for damage they cause.

If repairing or re-using old wood isn't possible, here's an A to Z guide to buying new timber. Find out if it's from endangered trees, or from a sustainable source.