A program can work out how trustworthy and likeable you seem based on your features, and how to improve them.

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Horizon: How To Find Love Online
Internet dating has transformed our love lives. One in five committed couples meet on the internet and 91 million of us around the world log on to internet dating sites. Dr Xand van Tulleken is one of them. An expert in public health issues at Fordham University in New York, he is hopelessly single, and looking for love. Can Dr Hannah Fry, lecturer in mathematics at University College London, use her statistical know-how to help secure him the partner of his dreams?

Welcome to BBC Earth Lab! Here we answer all your curious questions about science in the world around you (and further afield too). If there’s a question you have that we haven’t yet answered let us know in the comments on any of our videos and it could be answered by one of our Earth Lab experts.

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