Every time we buy something, we’re extracting something from the earth in some way. And we’re all buying so much stuff all the time, the planet can’t cope. So cutting down on buying things is one of the best ways to help cut emissions. And guess what, today is Buy Nothing Day! So your challenge today is to do just that, don’t buy anything. If you really want to spend some money, consider donating to a good cause. And if you want to do something positive as well, why not try mending or repairing something you’ve already got to make it good again?