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Rio+20 - The future we want?

The challenges facing the upcoming Earth Summit, according to the UN's man in charge.

• 17 mins

The World of the Activist

What does environmental activism really achieve?

• 17 mins

Global v Local

Where's the best place to kick-start sustainable development?

• 17 mins

The Green Games

Sustainability at the Olympics, Rio +20 reaction, and Jamaican herbs.

• 17 mins

After We're Dead

Each year 55 million of us die - what impact does this have on the environment?

• 17 mins

Carbon Tax and Right-Wing Greens

Australia's carbon tax, Germany's right-wing greens and California's geothermal energy.

• 17 mins

Bordered World

How lines on a map shape our lives, our ideology and our development (Repeat).

• 17 mins

Bananas and the global food chain

Hanging out with millions of bananas to learn about global food supplies (repeat).

• 17 mins

A Global Audience With Sir David Attenborough

Mike Williams talks to Sir David Attenborough about his life and work (repeat)

• 17 mins

The Best of One Planet

For the final edition of One Planet, we look back at some of our greatest hits.

• 17 mins

Why do we have tattoos?

Mike Williams on where tattoos come from and what they say about us.

• 17 mins

Why do we wear ties?

Why do we do the things we do? This week, Mike Williams asks why we wear neckties.

• 18 mins

Why do we Behave so Oddly Inside Elevators?

This week, the lift. Why do we behave so oddly inside them?

• 18 mins

Why do we smoke?

In this week's programme Mike Williams looks at why people start smoking.

• 17 mins

The Bullet

The history and design of the bullet and why people use them

• 17 mins

Why do we laugh?

What is it that actually triggers our laughter, do all of us find the same things funny?

• 17 mins

The Shaved Head

Why do we care so much about the hair on our heads? Join Mike Williams to find out why.

• 17 mins

The Handshake

Millions of us use this gesture but where does this everyday ritual come from?

• 17 mins

Coming of Age

Why do different cultures mark the advent of adulthood at different ages?

• 17 mins

Blue

The weird world of the colour blue.

• 17 mins

The Tap

What changes when taps come to town? Mike Williams travels to Ghana.

• 17 mins

Fear - Episode 1

What is fear? Are our fears universal and how do we go about facing our fears?

• 17 mins

Fear - Episode 2

Why do some of us enjoy and endure fear, horror and suspense?

• 17 mins

The Drum

Why do we find the beat of the drum so intoxicating?

• 17 mins

The Sackman (and other stories)

The Sackman - a very different Father Christmas

• 17 mins

Manners

The strange customs and conduct that make up ‘good manners’. Where do they come from?

• 17 mins

Nitrogen: Forgetting Fritz

Why have we forgotten Fritz Haber?

• 17 mins

The Heel

Where did the fascination with elevated footwear come from and what do they tell us?

• 17 mins

The Boxers of Bukom

Why are the men of Bukom in Accra so good at boxing?

• 17 mins

Mirrors

Mike Williams explores the myths and mysteries of the mirror

• 17 mins