Jim Green: Has Nasa lost its way? - a podcast by BBC World Service

Stephen Sackur speaks to Jim Green who has just retired as chief scientist of Nasa. He was involved with extraordinary missions to Mars, Jupiter and Mercury but he also saw Nasa funding slashed and ever more reliance on co-operation with billionaire privateers. Has Nasa lost its way?

(Photo: Jim Green appears on Hardtalk via videolink)

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