Compostable plastic

 

I was interested in this clue about standards for compostable plastic. Some thoughts on the standard are here. Scrolling down on this, you'll see that temperature is an issue, and perhaps volume. The bag shown has been on my desk for some weeks and has not decayed. It seems that the thing is to have a warm compost bin. Also that industrial and home composting are two different things. One method seems to involve having plastic-digesting enzymes encased in shells that break down at the higher temperatures, releasing the enzymes. This Guardian article is sceptical about whether it can work.