BHBS Science and Rashmi Sudiwala via Twitter asked:
We 'recycle' our plastics but are they really recycled? How much can be recycled? I suspect less than most people think.
Athene - There's a big variety. One of the problems with recycling plastics is that if you take different kinds of plastic and put them together, they don't mix at all well, so you don't end up with a good product. The ability to sort plastics which you are hearing about is really transforming that. So, there is a variety and itís a question of, what end-product you're trying to make, whether recycled plastic is good enough for it.