Dr Kevin Fong finds out how close scientists are to being able to mend your heart if it stops working. He meets some of the people who have undergone pioneering heart operations and the scientists who are pushing the limits of cardiac treatment. We meet a man who has had his heart replaced with an artificial one powered by a mechanical pump he carries around in a rucksack, and witness a scientist bring a dead animal heart back to life on a workbench. Plus, the work of an American scientist who is using stem cells to turn what she calls a 'ghost heart' - the scaffold of a heart - into a replacement heart for humans.

Episode Viewers and Ratings

Season 49 Episode 13 of Horizon resulted in a 0.00 rating in the 18-49 demographic.

Horizon Season 49 Episodes...

• s49e01 - Back from the Dead
• s49e02 - The Death of the Oceans?
• s49e03 - What Happened Before the Big Bang?
• s49e04 - Is Seeing Believing?
• s49e05 - A Miracle Cure? A Decade of the Human Genome
• s49e06 - Asteroids
• s49e07 - Deepwater Disaster: The Untold Story
• s49e08 - What is One Degree?
• s49e09 - What Is Reality?
• s49e10 - Science Under Attack
• s49e11 - The Secret World of Pain
• s49e12 - Surviving a Car Crash
• s49e13 - How to Mend a Broken Heart
• s49e14 - Are We Still Evolving?
• s49e15 - Predators in the Backyard

Horizon Show Summary

Horizon is BBC Two's flagship 50-minute science documentary series.

Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia.

In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand.

In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

In September 2014 it celebrated its 50th anniversary and it continues to enjoy outstanding critical acclaim.