Investigates the theory put forward by biologist David Haig, who suggests that, far from being a period of physical harmony for mother and baby, during pregnancy the two are engaged in a struggle through the placenta to control available resources, such as oxygen and sugar. While the baby's genes are trying to promote growth, the mother's genes are trying to restrict the draining effect.

Episode Viewers and Ratings

Season 31 Episode 17 of Horizon resulted in a 0.00 rating in the 18-49 demographic.

Horizon Season 31 Episodes...

• s31e01 - Season 31, Episode 01
• s31e02 - Season 31, Episode 02
• s31e03 - Season 31, Episode 03
• s31e04 - Season 31, Episode 04
• s31e05 - Season 31, Episode 05
• s31e06 - Season 31, Episode 06
• s31e07 - Season 31, Episode 07
• s31e08 - Season 31, Episode 08
• s31e09 - Season 31, Episode 09
• s31e10 - Season 31, Episode 10
• s31e11 - Season 31, Episode 11
• s31e12 - Farewell Fantastic Venus
• s31e17 - Foetal Attraction

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.