Many of us can remember returning our pop bottles to the shop in return for cash and wonder why we can’t use a system like this today to reduce, reuse and recycle. In Scotland a Deposit Return Scheme has been on trial, but in a complex material world it’s not as simple as the schemes we might remember. Tom Heap and Sepi Golzari-Munro turn detective to find out why the DRS (Deposit Return Scheme) is under threat and if it can survive to launch as intended. The scheme is causing issues for small businesses like craft brewers, it's angering politicians who are concerned about the added cost to consumers and it's being questioned by some waste management experts who believe the gains in recycling rates may be small in comparison to the huge costs of implementation. Defenders argue that we need to take action and that change is never popular but that similar schemes in Europe have achieved over 90% recycling rates. There are no simple answers with this one so it’s going to take some hard line detective work by our Costing the Earth crack team. Tom and Sepi step up to uncover the truth and consider the best future for bottle recycling. Producer : Helen Lennard