Dr Chris Smith and the Naked Scientist team present the latest science news, analysis and breakthroughs.

In this week's episode...After a rise in Covid cases across the country, we try to find out when exactly are people infectious? The potential ban on single use vapes and farewell to Dolly's father, we look at the legacy of Ian Wilmut, who cloned the world's most famous sheep.

Plus in our new Titans of Science series, we continue with part 2 of our interview with Helen Sharman, the first Britain in space, we find out what day to day life was like on the Mir Space Station.

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