Your Feel-Good Policies Are An Ineffective Inconvenience (and are probably causing even bigger problems)

Bjorn Lomborg on plastic bag bans:

Last week, Prime Minister Justin Trudeau announced a plan to reduce plastic pollution, which will include a ban on single-use plastics as early as 2021. This is laudable: plastics clog drains and cause floods, litter nature and kill animals and birds.

Of course, plastic also makes our lives better in a myriad of ways. In just four decades, plastic packaging has become ubiquitous because it keeps everything from cereals to juice fresher and reduces transportation losses, while one-use plastics in the medical sector have made syringes, pill bottles and diagnostic equipment more safe.

Going without disposable plastic entirely would leave us worse off, so we need to tackle the problems without losing all of the benefits...

But we need to be honest about how much consumers can achieve. As with other environmental issues, instead of tackling the big-picture problems to actually reduce the plastic load going into oceans, we focus on relatively minor changes involving consumers, meaning we only ever tinker at the margins...

But even if every country banned plastic bags it would not make much of a difference, since plastic bags make up less than 0.8 per cent of the mass of plastic currently afloat on the world’s oceans.

Rather than trying to save the oceans with such bans in rich countries, we need to focus on tackling the inferior waste management and poor environmental policies in developing regions.

Research from 2015 shows that less than 5 per cent of land-based plastic waste going into the ocean comes from OECD countries, with half coming from just four countries: China, Indonesia, Philippines and Vietnam. While China already in 2008 banned thin plastic bags and put a tax on thicker ones, it is estimated to contribute more than 27 per cent of all marine plastic pollution originating from land.

Moreover, banning plastic bags can have unexpected, inconvenient results. A new study shows California’s ban eliminates 40 million pounds of plastic annually. However, many banned bags would have been reused for trash, so consumption of trash bags went up by 12 million pounds, reducing the benefit. It also increased consumption of paper bags by twice the saved amount of plastic – 83 million pounds. This will lead to much larger emissions of CO₂...

We also need to consider the wider environmental impact of our bag choices. A 2018 study by the Danish Ministry of Environment and Food looked not just at plastic waste, but also at climate-change damage, ozone depletion, human toxicity and other indicators. It found you must reuse an organic cotton shopping bag 20,000 times before it will have less environmental damage than a plastic bag.

If we use the same shopping bag every single time we go to the store, twice every week, it will still take 191 years before the overall environmental effect of using the cotton bag is less than if we had just used plastic.

Even a simple paper bag requires 43 reuses to be better for the environment – far beyond the point at which the bag will be fit for the purpose.

The study clearly shows that a simple plastic bag, reused as a trash bag, has the smallest environmental impact of any of the choices.

That knowledge doesn't make the lefties feeeeeeel any better about themselves, though, and it certainly doesn't give them reason to exercise compulsion over the rest of us, so it must be ignored.

Update:  Related:

FLASHBACK: HOW TO SOLVE THE PLASTIC CRISIS:

This is a crisis made — and growing worse — throughout developing Asia.
Just eight countries in the region are responsible for about 63 percent of total plastic waste flowing into the oceans. Little of that junk has been exported by rich economies. Instead, it’s almost solely generated by Asia’s newly minted consumer classes, the vast majority of whom lack access to garbage collection, modern landfills and incineration. Any progress in reducing ocean plastic will have to start with them.

Bans on plastic straws in America are just a power move by local greens, not a serious response.

Update #2, 7/27/19: