For the final edition of One Planet, we look back at some of our greatest hits.
Mike Williams talks to Sir David Attenborough about his life and work (repeat)
Hanging out with millions of bananas to learn about global food supplies (repeat).
How lines on a map shape our lives, our ideology and our development (Repeat).
Australia's carbon tax, Germany's right-wing greens and California's geothermal energy.
Each year 55 million of us die - what impact does this have on the environment?
Sustainability at the Olympics, Rio +20 reaction, and Jamaican herbs.
Where's the best place to kick-start sustainable development?
What does environmental activism really achieve?
The challenges facing the upcoming Earth Summit, according to the UN's man in charge.