Plastic bag ban
Thin plastic bags are commonly available at retail stores. Many stores make them available for free. These bags have a number of problems though: In many cases, they are only used once. Like other plastic, they take a long time to decay. In the 21st century there have been ideas to replace these bags with other bags, or to make a tax apply to these bags. This is known as plastic bag ban, or plastic bag charge. These bags are commonly made of low-density polyethylene (LDPE). For a long time, they were considered an easy way for transporting goods, that is both cheap, and hygienic. The problems that are associated with these bags are that non-renewable resources (such as crude oil, gas and coal) are used to produce them. Disposing them is also problematic, very often they are simply thown away.  At the same time, shops have started introducing reusable shopping bags.