Scientists have come up with a new form of plastic which can be recycled back to a pristine state for resuse a huge number of times. This makes it a big contender to help stop the mountain of plastic trash we waste every day. The new material, PDK – which stands for polydiketoenamines – come with a penalty though. It’s very expensive to make. Something to do with one particular chemical component which costs a lot. However once PDK is…