- 'The impact of population growth has been exaggerated' Duration: 01:14 Green Babies
- The self-built housing estate Duration: 02:18 The House That Heats Itself
- "A brutal piece of technology" Duration: 01:34 Electrifying Africa: Beyond the Grid
- Jeremy Irons: "We cannot afford to destroy resources" Duration: 01:36 Dash for Ash
- Robot Farmer flies part two Duration: 00:13 Robot Farmers
- Robot Farmer flies part one Duration: 00:32 Robot Farmers
Man's effect on the environment, questioning accepted truths, challenging those in charge and...