Helena Merriman hears from Sir David Spiegelhalter about water shortage in South Africa, Kakuko Nagatani-Yoshida about plastic recycling in China and Heather Long about US jobs. Show more
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Helena Merriman hears from Sir David Spiegelhalter about water shortage in South Africa, Kakuko Nagatani-Yoshida about plastic recycling in China and Heather Long about US jobs. Show more