Purchasing more sustainable products is an effective way to reduce your carbon footprint and support sustainable companies. Food, clothing, appliances, and other products are made using different standards, support different political causes, etc. When purchasing food, look for Fair Trade options that ensure humane treatment of workers, labels that certify organic or free range food, and products that were made or grown locally. When purchasing clothing, consider buying second hand clothing to avoid wasting resources such as water, land, and energy that go into clothing production - you can also seek out eco-conscious brands. For appliances, look for the Energy Star label that identifies the most efficient products. You can also use apps to buy sustainable products; the OpenLabel smartphone app allows users to scan the barcode of a product and instantly see the reasons to buy or avoid the product or the company.