As you can read in these pages, lots of you are already actively seeking solutions to the world’s water problems, but we all have a part to play. It can be as simple as not leaving the tap running while you wash your teeth, taking a shorter shower than usual or sharing a small bath, and applying the 3Rs – reduce, reuse, recycle – in everything you do. It takes around 3,000 litres of water to make a pair of jeans, while it takes 1,500 litres to grow enough cotton for a t-shirt. So make your clothes last longer – and when they wear out, consider garments made from less thirsty crops like linen, hemp or even nettles.