Writer and broadcaster Chris Goodall discusses his new book Ten Technologies to Save the Planet. We ask him whether Barack Obama will be the key.
We also hear from Sir Gabriel Horn on why the government should not be involved in classifying drugs.
Ken Arnold from the Wellcome Collection takes us around his new exhibition War and Medicine, which looks at the paradoxical relationship between conflicts and medical advances.
Also getting a mention – the European Space Agency's new facility near Oxford; fresh fuel economy claims; and lizards doing push-ups.
Science correspondents Ian Sample and James Randerson are also in the pod.
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WARNING: does not contain any discussion of religion or atheism
