This week, researchers make diamonds tough, and evidence of incest in a 5,000 year old tomb.

In this episode:

00:51 Tough versus hard

Diamonds are famed for their hardness, but they are not so resistant to fracture. Now, researchers have toughened up diamonds, which could open up new industrial applications. Research Article: Yue et al.

06:07 Research Highlights

A spacecraft helps physicists work out the lifespan of a neutron, and the icy hideaway of an endangered whale. Research Highlight: The vanishing-neutron mystery might be cracked by a robot in outer space; Research Highlight: A secluded icy fortress shelters rare whales

08:33 Ancient inbreeding

Analysis of the genomes of humans buried in an ancient Irish tomb has uncovered many surprises, including evidence of incest amongst the elite. Research Article: Cassidy et al.; News and Views: Incest uncovered at the elite prehistoric Newgrange monument in Ireland

21:13 #ShutdownSTEM

Nature reporter Nidhi Subbaraman joins us to talk about the #ShutdownSTEM movement, and anti-black racism in academia. Editorial: Note from the editors: Nature joins #ShutDownSTEM; News: Grieving and frustrated: Black scientists call out racism in the wake of police killings; News: Thousands of scientists worldwide to go on strike for Black lives; News: How #BlackInTheIvory put a spotlight on racism in academia

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