20 May 2019 --- Sustainability has been tipped as a key theme this year at a multitude of industry events and forms a key pillar in many companies’ reported strategy. Key to fulfilling sustainability pledges, both from an economic and environmental perspective, will be making better use of waste streams, whether it is energy, chemicals, or bio-based materials. This is according to Mikkel Thrane, Head of Sustainability at DuPont.