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In today’s programme:

We look at the lassa fever outbreak in the UK.

How constant is time? Scientists are developing incredibly accurate atomic clocks that can measure tiny distortions.

And, we hear about the amazing case of a man who received a pig’s heart… as we look at the science of what's called "xenotransplantation"

Put on some safety goggles as Dr Chris Smith and the Naked Scientist team present the hottest science news, analysis and breakthroughs.

Get the podcast from the ³ÉÈËÂÛ̳ Sounds app.