Laurie Taylor considers the impact of drug enforcement operations. (R)
The gene which could lead to more sustainable transport fuel from crops and plant waste.
Michaela Strachan presents the story and sound of the icterine warbler.
2/5 Roger Law meets two creators - one making real objects, the other computer-generated ones.
1/5 Wildlife cameraman John Aitchison watches leopard seals hunting young penguins. (R)
Melvyn Bragg tells the story of the Nobel-winning physicists William and Lawrence Bragg. (R)
Tuesday 20 August 2013