‘How to Find Love Online’ explores numbers and science behind online dating

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.

An expert in public health issues at Fordham University in New York, Dr. Xand van Tulleken 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 connect this public health expert with the partner of his dreams?

Find out Wednesday, Dec. 12, at 9 p.m. on Arizona PBS.

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Investigate 'Murder on the Home Front' in 1940s London

'Letters from Baghdad' shares true story of Gertrude Bell's influence on the Middle East

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'Looking for Fred Astaire' explores a complicated Hollywood legend

"Looking for Fred Astaire" explores the life of the dancing legend and Hollywood star, whose work with Hollywood's biggest starlets sometimes left him frustrated and depressed.

Learn stories behind the myth and legacy of 'Real Sherlock Holmes'

"The Real Sherlock Holmes" airs Wednesday, Dec. 19, at 9 p.m. It reveals the hidden side of Holmes' legacy through exclusive interviews, reconstructions and memorable clips from popular TV shows and books through the years.

'Extreme Railways' travels the world in search of incredible journeys

"Extreme Railways" host Chris Tarrant embarks on a five-part series of extreme railway journeys across the world's toughest terrains, coming to Arizona PBS every Sunday at 6 p.m.