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Building eco-metropolises

On today's show: Ever more people in the world are living in urban areas. But how can we make our cities sustainable? From the dangers of air pollution to shrinking natural spaces and our carbon foot print in cities — it's high time for action.

Africa's resource wars

Fertile land in Nigeria is being eaten up drought, fueling conflict between herdsmen who need what's left to graze their animals and farmers who need it for their crops. Meanwhile in East Africa, tensions are rising over who controls the waters of the Nile.

Spring cleaning

It's time for a bit of spring cleaning, whether it's your summer wardrobe, the local beach – or even the air we breathe! From the heart of Europe to China – we're cleaning up our act.

Batty about biodiversity

There’s bat appreciation day, international day for biodiversity and the day of endangered species – we’re great at naming days after our animals, but is it enough? Are we treating our biodiversity wisely, or failing them badly?

Journeys to Africa

This week, three stories from the African continent: In Rwanda, we explore the mountain gorilla's complex relationship with its human neighbors; in Kenya, we uncover the ugly side of the flower industry; and in the Congo Basin, we find out about how the world's second-largest tropical forest is under threat.

Climate action – walk the walk!

Climate protection is on the agenda at talks in Bonn. But back home, who's really taking action? We visit a budding environmental movement in Poland's coal heartland and find out how an oil pipeline has pitched environmentalists against the Canadian president. Plus, solar power in Kenya and a cool solution to LA's urban heat problem.

To the ends of the Earth

Our planet is full of remote and risky places — and some people will do anything to protect them or unlock their secrets. From researchers uncovering hidden ecosystems in Antarctica to park rangers in Africa who risk their lives to defend wildlife, we take a journey to some of the harshest corners of the globe.

Bird's-eye view

What's happening to our birds? French songbirds are disappearing, Berlin's pigeons are thriving, and wetland birds all over the world are suffering from lead poisoning. As they say, what's good for the goose is good for the gander — and what's bad for the birds is definitely bad news for us humans.

Extreme weather and us

From hurricanes in the Caribbean to drought in Africa and the Middle East —As our planet warms, extreme weather events are becoming ever more frequent and intense. But people around the world are learning to adapt to these disasters and make a new, greener start.

Our edible footprint

From wine to maple syrup, some of our most-loved delicacies could be at risk from climate change if we don't act fast. Plus, the humble sandwich may not be as environmentally innocent as you think.

Nature in transition

On this week's show, Colombia's impressive birdlife has survived civil war. Can it now help save the country's forests? Alien iguanas are invading the US state of Florida with dramatic results. Plus, why South-East Asia's longest river could be destroyed in just a few decades.

Playing with food

From cultured cabbages to musical leeks, we explore the weird and wonderful ways that we use and produce food.

50 episodes

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