More lectures to watch

A vibrant portrait of the “original affluent society”--the Bushmen of southern Africa--by the anthropologist who has spent much of the last twenty-five years documenting their encounter with modernity.

To outsiders, Sri Lanka's civil war (1983-2009) remains perplexing. Award-winning author John describes a journey that begins with Tooting's 8,000 refugees, and ends on the battlefields of Mullaitivu. There's horror here, beauty and hope.

There's too much plastic in our oceans, much of it as microscopic particles. Where does it come from? Where does it do most harm? And what can we do about it?

Drawing on personal experiences, Niall describes the challenges and opportunities of biodiversity research where rapid development and illegal activities pose an immediate threat to the conservation of many endangered species.