Six months after the ravages of Hurricane Katrina, scientists investigate how New Orleans's flood defences failed to stop it becoming waterlogged. As the city sinks, global sea levels are rising and the coastline that protects it is disappearing - prompting experts to wonder whether it should be rebuilt at all.

Episode Viewers and Ratings

Season 41 Episode 13 of Horizon resulted in a 0.00 rating in the 18-49 demographic.

Horizon Season 41 Episodes...

• s41e01 - Tsunami: Naming The Dead
• s41e02 - The Hawking Paradox
• s41e03 - The Mystery of the Human Hobbit
• s41e04 - The Doctor Who Makes People Walk Again
• s41e05 - Could Fish Make My Child Smart
• s41e10 - Space Tourists
• s41e11 - Waiting for a Heartbeat
• s41e12 - A War on Science
• s41e13 - The Lost City of New Orleans
• s41e14 - Most of Our Universe Is Missing
• s41e16 - The Lost Civilisation of Peru
• s41e17 - The Next Megaquake
• s41e18 - Does The MMR Jab Cause Autism

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.