The environmental law charity ClientEarth and 13 other groups headed into a Flemish court this week in an effort to stop Ineos building a petrochemical plant that would be the biggest project of its kind in Europe for 30 years. Madeleine Finlay hears from correspondent Sandra Laville about how plastics are made, the environmental and health impacts of the process and what needs to be done to get a handle on plastic pollution. Help support our independent journalism at theguardian.com/sciencepod