The Why Factor Episodes Available now
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Bananas and the global food chain
Hanging out with millions of bananas to learn about global food supplies (repeat).
Bordered World
How lines on a map shape our lives, our ideology and our development (Repeat).
Carbon Tax and Right-Wing Greens
Australia's carbon tax, Germany's right-wing greens and California's geothermal energy.
After We're Dead
Each year 55 million of us die - what impact does this have on the environment?
The Green Games
Sustainability at the Olympics, Rio +20 reaction, and Jamaican herbs.
Global v Local
Where's the best place to kick-start sustainable development?
The World of the Activist
What does environmental activism really achieve?
Rio+20 - The future we want?
The challenges facing the upcoming Earth Summit, according to the UN's man in charge.
Mining the floor of our oceans
Mineral companies get ready to harvest our seabed, plus we hear an animal orchestra.
A Himalayan-sized data gap
We meet the mountain scientists trying to fill the holes in our understanding of glaciers.
