Think green. Episode 24

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Air pollution: We take a look at a bus that can refuel on waste cooking oil. Everest rubbish: Has Everest turned into the world's highest garbage dump? Fishing research: We take a look at a research ship that will ensure that present fish stocks can survive and grow in a strong environment. Canada climate change: Toronto has been built to withstand cold icy temperatures, not oppressive smog-laden heat. Snow leopards: Snow leopards are being driven to extinction by their illegal trade of their fur, bones and even living animals. Italy toxic waste: Illegal dumping may be the cause of the increase of child malformation and certain cancer types. GM crops: Is genetic modification the answer to feeding the world or damaging to the environment?