households and whether the new (current) system does enough to encourage
recycling, there are studies that now say recycling may change.
http://fivethirtyeight.com/features/the-era-of-easy-recycling-may-be-coming-to-an-end/
St Paul's recycling was noted:
"A 2002 study, for example, compared five different methods of recycling
collection in the city of St. Paul, Minnesota, with the city’s then-current
multi-sort system. Single-stream recycling produced the highest rate of loss at
the processing stage — essentially, the most stuff put in recycling bins that
couldn’t actually be recycled. Compared with the existing system, gross tons of
recycling collected at the curb increased by 20 percent, but there was a net
decrease of 12 percent in tons of material that left the sorting facility ready
for recycling."
It is also noted that China is not taking as much recycling as the country once
did.