A study published in the Daily Mail on the ‘toxicity’ of PLA cups caused a lot of friction last month because the study actually does not say this. Reporting wrongly on the issue which is contained in this scientific paper. 

The Daily Mail and other media came to the wrong conclusions, mostly because the communications from the University of Gothenburg were themselves confused. The European Bioplastics Association issued a rebuttal of the report which can be found here

We wish to further make the point that compostable plastics are intended for composting. Whatever material is thrown into the environment as litter will cause some harm, sooner or later, and is to be avoided. This is altogether a different matter to the ‘toxicity’ Gothenburg University supposedly found.