Nasa scientists reveal the impressive results from early tests of the samples from the 4.5-billion-year-old Bennu asteroid.  It comes as the US space agency & SpaceX announce the delay or the Psyche mission launch due to bad weather. 

A monkey has survived two years with a pig’s kidney in what’s being called a “major medical advancement”. 

Also in this episode:

• Bionic hand breakthrough could be ‘life-changing’ for amputees 
• Tower Bridge engineers replace critical components
• People with early Alzheimer’s disease ‘have difficulty turning when walking’
• An amateur astronomer helps capture first-ever afterglow of huge planetary collision
• How female frogs can go to extreme lengths to avoid unwanted suitors

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