Many of us are now remembering to carry our own cotton or other home made bags to shops to bring back our shopping. So what is the carbon footprint of using plastic carrier bags?
Mike Berners-Lee reminds us in his book How Bad are Bananas? The Carbon Footprint of Everything that it comes to 3 g CO2e very lightweight variety. 10 g standard disposable supermarket bag. 50 g heavyweight, reusable variety!
National Geographic estimates that the world uses between 500 billion and 1 trillion disposable grocery bags per year! That is a lot of rubbish!
Better alternatives are: a rucksack which like a good friend makes things easier to carry and keeps your hands free! Or try a wheelie basket (which avoids you having to lift heavy shopping at all!) or sturdy reusable bags.
If you are using reusable plastic bags make sure you do reuse them more than five times.