What is our current understanding of greenhouse gas emissions released during the production of natural gas? How can we reduce these emissions? Dr Paul Balcombe discusses the context for the Sustainable Gas Institute's first White Paper.

This is the first annual lecture by the Sustainable Gas Institute from Dr David Allen, a chemical engineer at the University of Texas at Austin. Title: 'Increased Natural Gas Production, Methane Emissions and Change, A US Perspective'.

Pentastomids, which live inside vertebrates, have been around for much longer than their hosts – so how did they live before? Dr Mark Sutton explains the latest findings. (Extract 3 of 4 from the Imperial College Podcast 3 June 2015)