DNA has revealed potential animal COVID carriers at the Wuhan market, but what does that tell us about the start of the pandemic? Roland talks to two of the experts behind the new analysis: Dr Florence Débarre and Professor Eddie Holmes.

Also, we look into Europe’s grand new space ambitions. ESA director general Josef Aschbacher gives Roland the details of the space agency’s out-of-this-world plans.

And Beethoven's last DNA: a hairy story of his family and genetic afflictions. Dr Tristan Begg shares how the composer’s tresses unlocked new information about his life and death.

Inside our gut lives an entire ecosystem of bacteria and microbes, called the microbiome. In fact, the human body contains trillions of microorganisms, which outnumber our cells by ten to one. This means that technically, we are more microbe than human. But not only do these microbes rely on us to survive, we also rely on them too for vital bodily functions. So what impact do these trillions of microbes have on our health? That’s the question that’s been bothering CrowdScience listener Russell, from Canada.

Presenter Caroline Steel sets out to investigate. She visits the only museum dedicated to microbes in the world to explore what exactly these microbes inside us are, what they do and why we have so many of them inside our bodies. How important is our microbiome for our survival and what impact can it have on our physical health?

Caroline finds out what impacts our microbiome, what we can do to improve our inner ecosystem, and how our microbes can take a disturbing turn on us after we die.

Image credit: Eddie Holmes

Producer: Roland Pease 
Assistant Producer: Sophie Ormiston

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